[{"quality_controlled":"1","abstract":[{"text":"Kelvin probe force microscopy (KPFM) is a powerful tool for studying contact electrification (CE) at the nanoscale, but converting KPFM voltage maps to charge density maps is nontrivial due to long-range forces and complex system geometry. Here we present a strategy using finite-element method (FEM) simulations to determine the Green's function of the KPFM probe/insulator/ground system, which allows us to quantitatively extract surface charge. Testing our approach with synthetic data, we find that accounting for the atomic force microscope (AFM) tip, cone, and cantilever is necessary to recover a known input and that existing methods lead to gross miscalculation or even the incorrect sign of the underlying charge. Applying it to experimental data, we demonstrate its capacity to extract realistic surface charge densities and fine details from contact-charged surfaces. Our method gives a straightforward recipe to convert qualitative KPFM voltage data into quantitative charge data over a range of experimental conditions, enabling quantitative CE at the nanoscale.","lang":"eng"}],"publication_status":"published","language":[{"iso":"eng"}],"status":"public","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"},{"_id":"ScienComp"}],"article_type":"original","type":"journal_article","citation":{"mla":"Pertl, Felix, et al. “Quantifying Nanoscale Charge Density Features of Contact-Charged Surfaces with an FEM/KPFM-Hybrid Approach.” <i>Physical Review Materials</i>, vol. 6, no. 12, 125605, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/PhysRevMaterials.6.125605\">10.1103/PhysRevMaterials.6.125605</a>.","ista":"Pertl F, Sobarzo Ponce JCA, Shafeek LB, Cramer T, Waitukaitis SR. 2022. Quantifying nanoscale charge density features of contact-charged surfaces with an FEM/KPFM-hybrid approach. Physical Review Materials. 6(12), 125605.","ama":"Pertl F, Sobarzo Ponce JCA, Shafeek LB, Cramer T, Waitukaitis SR. Quantifying nanoscale charge density features of contact-charged surfaces with an FEM/KPFM-hybrid approach. <i>Physical Review Materials</i>. 2022;6(12). doi:<a href=\"https://doi.org/10.1103/PhysRevMaterials.6.125605\">10.1103/PhysRevMaterials.6.125605</a>","chicago":"Pertl, Felix, Juan Carlos A Sobarzo Ponce, Lubuna B Shafeek, Tobias Cramer, and Scott R Waitukaitis. “Quantifying Nanoscale Charge Density Features of Contact-Charged Surfaces with an FEM/KPFM-Hybrid Approach.” <i>Physical Review Materials</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/PhysRevMaterials.6.125605\">https://doi.org/10.1103/PhysRevMaterials.6.125605</a>.","ieee":"F. Pertl, J. C. A. Sobarzo Ponce, L. B. Shafeek, T. Cramer, and S. R. Waitukaitis, “Quantifying nanoscale charge density features of contact-charged surfaces with an FEM/KPFM-hybrid approach,” <i>Physical Review Materials</i>, vol. 6, no. 12. American Physical Society, 2022.","apa":"Pertl, F., Sobarzo Ponce, J. C. A., Shafeek, L. B., Cramer, T., &#38; Waitukaitis, S. R. (2022). Quantifying nanoscale charge density features of contact-charged surfaces with an FEM/KPFM-hybrid approach. <i>Physical Review Materials</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevMaterials.6.125605\">https://doi.org/10.1103/PhysRevMaterials.6.125605</a>","short":"F. Pertl, J.C.A. Sobarzo Ponce, L.B. Shafeek, T. Cramer, S.R. Waitukaitis, Physical Review Materials 6 (2022)."},"isi":1,"author":[{"first_name":"Felix","id":"6313aec0-15b2-11ec-abd3-ed67d16139af","last_name":"Pertl","full_name":"Pertl, Felix"},{"full_name":"Sobarzo Ponce, Juan Carlos A","last_name":"Sobarzo Ponce","id":"4B807D68-AE37-11E9-AC72-31CAE5697425","first_name":"Juan Carlos A"},{"id":"3CD37A82-F248-11E8-B48F-1D18A9856A87","first_name":"Lubuna B","last_name":"Shafeek","full_name":"Shafeek, Lubuna B","orcid":"0000-0001-7180-6050"},{"first_name":"Tobias","full_name":"Cramer, Tobias","last_name":"Cramer"},{"first_name":"Scott R","id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87","full_name":"Waitukaitis, Scott R","orcid":"0000-0002-2299-3176","last_name":"Waitukaitis"}],"year":"2022","department":[{"_id":"ScWa"},{"_id":"NanoFab"}],"publication_identifier":{"eissn":["2475-9953"]},"publisher":"American Physical Society","day":"29","doi":"10.1103/PhysRevMaterials.6.125605","arxiv":1,"oa_version":"Preprint","article_number":"125605","acknowledgement":"This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement\r\nNo. 949120). This research was supported by the Scientific Service Units of the Institute of Science and Technology Austria (ISTA) through resources provided by the Miba Machine\r\nShop, the Nanofabrication Facility, and the Scientific Computing Facility. We thank F. Stumpf from Park Systems for useful discussions and support with scanning probe microscopy.\r\nF.P. and J.C.S. contributed equally to this work.","issue":"12","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","oa":1,"intvolume":"         6","volume":6,"main_file_link":[{"open_access":"1","url":" https://doi.org/10.48550/arXiv.2209.01889"}],"scopus_import":"1","date_published":"2022-12-29T00:00:00Z","article_processing_charge":"No","ec_funded":1,"title":"Quantifying nanoscale charge density features of contact-charged surfaces with an FEM/KPFM-hybrid approach","date_updated":"2023-08-03T14:11:29Z","month":"12","project":[{"call_identifier":"H2020","grant_number":"949120","_id":"0aa60e99-070f-11eb-9043-a6de6bdc3afa","name":"Tribocharge: a multi-scale approach to an enduring problem in physics"}],"_id":"12109","date_created":"2023-01-08T23:00:53Z","external_id":{"isi":["000908384800001"],"arxiv":["2209.01889"]},"publication":"Physical Review Materials"},{"issue":"7940","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","acknowledgement":"We thank P. Krogstrup for providing us with the NW materials. We thank A. Higginbotham, E. J. H. Lee, C. Marcus and S. Vaitiekėnas for helpful discussions and G. Steffensen for his input on the diffusive Little-Parks theory. This research was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the nanofabrication facility; the NOMIS Foundation; the CSIC Interdisciplinary Thematic Platform (PTI+) on Quantum Technologies (PTI-QTEP+). A.H. acknowledges support from H2020-MSCA-IF-2018/844511. ICN2 also acknowledges funding from Generalitat de Catalunya 2017 SGR 327. ICN2 is supported by the Severo Ochoa Program from Spanish MINECO (Grant no. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD programme. Authors acknowledge the use of instrumentation as well as the technical advice provided by the National Facility ELECMI ICTS, node ‘Laboratorio de Microscopías Avanzadas’ at University of Zaragoza. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 823717-ESTEEM3. This study was supported by MCIN with funding from European Union NextGenerationEU (PRTR-C17.I1) and Generalitat de Catalunya. This research is part of the CSIC programme for the Spanish Recovery, Transformation and Resilience Plan funded by the Recovery and Resilience Facility of the European Union, established by the Regulation (EU) 2020/2094. We thank support from Grant PGC2018-097018-BI00, project FlagERA TOPOGRAPH (PCI2018-093026) and project NANOGEN (PID2020-116093RB-C43), funded by MCIN/AEI/10.13039/501100011033/ and by ‘ERDF A way of making Europe’, by the European Union. M. Botifoll acknowledges support from SUR Generalitat de Catalunya and the EU Social Fund (project ref. 2020 FI 00103).","intvolume":"       612","oa":1,"volume":612,"related_material":{"link":[{"url":"https://ista.ac.at/en/news/imposter-particles-revealed-and-explained/","description":"News on ISTA Website","relation":"press_release"}],"record":[{"relation":"dissertation_contains","status":"public","id":"13286"},{"id":"12522","relation":"research_data","status":"public"}]},"main_file_link":[{"url":" https://doi.org/10.48550/arXiv.2203.07829","open_access":"1"}],"scopus_import":"1","ec_funded":1,"date_published":"2022-12-15T00:00:00Z","article_processing_charge":"No","keyword":["Multidisciplinary"],"month":"12","title":"Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks","date_updated":"2024-02-21T12:35:33Z","date_created":"2023-01-12T11:56:45Z","external_id":{"isi":["000899725400001"],"arxiv":["2203.07829"]},"_id":"12118","project":[{"name":"Majorana bound states in Ge/SiGe heterostructures","call_identifier":"H2020","_id":"26A151DA-B435-11E9-9278-68D0E5697425","grant_number":"844511"}],"page":"442-447","publication":"Nature","quality_controlled":"1","language":[{"iso":"eng"}],"status":"public","publication_status":"published","abstract":[{"lang":"eng","text":"Hybrid semiconductor–superconductor devices hold great promise for realizing topological quantum computing with Majorana zero modes1,2,3,4,5. However, multiple claims of Majorana detection, based on either tunnelling6,7,8,9,10 or Coulomb blockade (CB) spectroscopy11,12, remain disputed. Here we devise an experimental protocol that allows us to perform both types of measurement on the same hybrid island by adjusting its charging energy via tunable junctions to the normal leads. This method reduces ambiguities of Majorana detections by checking the consistency between CB spectroscopy and zero-bias peaks in non-blockaded transport. Specifically, we observe junction-dependent, even–odd modulated, single-electron CB peaks in InAs/Al hybrid nanowires without concomitant low-bias peaks in tunnelling spectroscopy. We provide a theoretical interpretation of the experimental observations in terms of low-energy, longitudinally confined island states rather than overlapping Majorana modes. Our results highlight the importance of combined measurements on the same device for the identification of topological Majorana zero modes."}],"article_type":"original","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"type":"journal_article","citation":{"short":"M. Valentini, M. Borovkov, E. Prada, S. Martí-Sánchez, M. Botifoll, A.C. Hofmann, J. Arbiol, R. Aguado, P. San-Jose, G. Katsaros, Nature 612 (2022) 442–447.","apa":"Valentini, M., Borovkov, M., Prada, E., Martí-Sánchez, S., Botifoll, M., Hofmann, A. C., … Katsaros, G. (2022). Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks. <i>Nature</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41586-022-05382-w\">https://doi.org/10.1038/s41586-022-05382-w</a>","ieee":"M. Valentini <i>et al.</i>, “Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks,” <i>Nature</i>, vol. 612, no. 7940. Springer Nature, pp. 442–447, 2022.","chicago":"Valentini, Marco, Maksim Borovkov, Elsa Prada, Sara Martí-Sánchez, Marc Botifoll, Andrea C Hofmann, Jordi Arbiol, Ramón Aguado, Pablo San-Jose, and Georgios Katsaros. “Majorana-like Coulomb Spectroscopy in the Absence of Zero-Bias Peaks.” <i>Nature</i>. Springer Nature, 2022. <a href=\"https://doi.org/10.1038/s41586-022-05382-w\">https://doi.org/10.1038/s41586-022-05382-w</a>.","ama":"Valentini M, Borovkov M, Prada E, et al. Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks. <i>Nature</i>. 2022;612(7940):442-447. doi:<a href=\"https://doi.org/10.1038/s41586-022-05382-w\">10.1038/s41586-022-05382-w</a>","mla":"Valentini, Marco, et al. “Majorana-like Coulomb Spectroscopy in the Absence of Zero-Bias Peaks.” <i>Nature</i>, vol. 612, no. 7940, Springer Nature, 2022, pp. 442–47, doi:<a href=\"https://doi.org/10.1038/s41586-022-05382-w\">10.1038/s41586-022-05382-w</a>.","ista":"Valentini M, Borovkov M, Prada E, Martí-Sánchez S, Botifoll M, Hofmann AC, Arbiol J, Aguado R, San-Jose P, Katsaros G. 2022. Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks. Nature. 612(7940), 442–447."},"isi":1,"author":[{"full_name":"Valentini, Marco","last_name":"Valentini","id":"C0BB2FAC-D767-11E9-B658-BC13E6697425","first_name":"Marco"},{"id":"2ac7a0a2-3562-11eb-9256-fbd18ea55087","first_name":"Maksim","full_name":"Borovkov, Maksim","last_name":"Borovkov"},{"last_name":"Prada","full_name":"Prada, Elsa","first_name":"Elsa"},{"first_name":"Sara","full_name":"Martí-Sánchez, Sara","last_name":"Martí-Sánchez"},{"last_name":"Botifoll","full_name":"Botifoll, Marc","first_name":"Marc"},{"last_name":"Hofmann","full_name":"Hofmann, Andrea C","first_name":"Andrea C","id":"340F461A-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Arbiol","full_name":"Arbiol, Jordi","first_name":"Jordi"},{"full_name":"Aguado, Ramón","last_name":"Aguado","first_name":"Ramón"},{"full_name":"San-Jose, Pablo","last_name":"San-Jose","first_name":"Pablo"},{"last_name":"Katsaros","orcid":"0000-0001-8342-202X","full_name":"Katsaros, Georgios","first_name":"Georgios","id":"38DB5788-F248-11E8-B48F-1D18A9856A87"}],"year":"2022","publication_identifier":{"eissn":["1476-4687"],"issn":["0028-0836"]},"department":[{"_id":"GeKa"}],"day":"15","publisher":"Springer Nature","arxiv":1,"oa_version":"Preprint","doi":"10.1038/s41586-022-05382-w"},{"abstract":[{"lang":"eng","text":"Spin qubits are considered to be among the most promising candidates for building a quantum processor. Group IV hole spin qubits have moved into the focus of interest due to the ease of operation and compatibility with Si technology. In addition, Ge offers the option for monolithic superconductor-semiconductor integration. Here we demonstrate a hole spin qubit operating at fields below 10 mT, the critical field of Al, by exploiting the large out-of-plane hole g-factors in planar Ge and by encoding the qubit into the singlet-triplet states of a double quantum dot. We observe electrically controlled X and Z-rotations with tunable frequencies exceeding 100 MHz and dephasing times of 1μs which we extend beyond 15μs with echo techniques. These results show that Ge hole singlet triplet qubits outperform their electronic Si and GaAs based counterparts in speed and coherence, respectively. In addition, they are on par with Ge single spin qubits, but can be operated at much lower fields underlining their potential for on chip integration with superconducting technologies."}],"publication_status":"published","status":"public","language":[{"iso":"eng"}],"quality_controlled":"1","type":"journal_article","citation":{"chicago":"Jirovec, Daniel, Andrea C Hofmann, Andrea Ballabio, Philipp M. Mutter, Giulio Tavani, Marc Botifoll, Alessandro Crippa, et al. “A Singlet Triplet Hole Spin Qubit in Planar Ge.” <i>Nature Materials</i>. Springer Nature, 2021. <a href=\"https://doi.org/10.1038/s41563-021-01022-2\">https://doi.org/10.1038/s41563-021-01022-2</a>.","ama":"Jirovec D, Hofmann AC, Ballabio A, et al. A singlet triplet hole spin qubit in planar Ge. <i>Nature Materials</i>. 2021;20(8):1106–1112. doi:<a href=\"https://doi.org/10.1038/s41563-021-01022-2\">10.1038/s41563-021-01022-2</a>","mla":"Jirovec, Daniel, et al. “A Singlet Triplet Hole Spin Qubit in Planar Ge.” <i>Nature Materials</i>, vol. 20, no. 8, Springer Nature, 2021, pp. 1106–1112, doi:<a href=\"https://doi.org/10.1038/s41563-021-01022-2\">10.1038/s41563-021-01022-2</a>.","ista":"Jirovec D, Hofmann AC, Ballabio A, Mutter PM, Tavani G, Botifoll M, Crippa A, Kukucka J, Sagi O, Martins F, Saez Mollejo J, Prieto Gonzalez I, Borovkov M, Arbiol J, Chrastina D, Isella G, Katsaros G. 2021. A singlet triplet hole spin qubit in planar Ge. Nature Materials. 20(8), 1106–1112.","short":"D. Jirovec, A.C. Hofmann, A. Ballabio, P.M. Mutter, G. Tavani, M. Botifoll, A. Crippa, J. Kukucka, O. Sagi, F. Martins, J. Saez Mollejo, I. Prieto Gonzalez, M. Borovkov, J. Arbiol, D. Chrastina, G. Isella, G. Katsaros, Nature Materials 20 (2021) 1106–1112.","apa":"Jirovec, D., Hofmann, A. C., Ballabio, A., Mutter, P. M., Tavani, G., Botifoll, M., … Katsaros, G. (2021). A singlet triplet hole spin qubit in planar Ge. <i>Nature Materials</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41563-021-01022-2\">https://doi.org/10.1038/s41563-021-01022-2</a>","ieee":"D. Jirovec <i>et al.</i>, “A singlet triplet hole spin qubit in planar Ge,” <i>Nature Materials</i>, vol. 20, no. 8. Springer Nature, pp. 1106–1112, 2021."},"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"article_type":"original","department":[{"_id":"GeKa"},{"_id":"NanoFab"},{"_id":"GradSch"}],"publication_identifier":{"issn":["1476-1122"],"eissn":["1476-4660"]},"year":"2021","author":[{"full_name":"Jirovec, Daniel","orcid":"0000-0002-7197-4801","last_name":"Jirovec","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","first_name":"Daniel"},{"full_name":"Hofmann, Andrea C","last_name":"Hofmann","id":"340F461A-F248-11E8-B48F-1D18A9856A87","first_name":"Andrea C"},{"first_name":"Andrea","last_name":"Ballabio","full_name":"Ballabio, Andrea"},{"first_name":"Philipp M.","full_name":"Mutter, Philipp M.","last_name":"Mutter"},{"first_name":"Giulio","last_name":"Tavani","full_name":"Tavani, Giulio"},{"first_name":"Marc","full_name":"Botifoll, Marc","last_name":"Botifoll"},{"full_name":"Crippa, Alessandro","orcid":"0000-0002-2968-611X","last_name":"Crippa","id":"1F2B21A2-F6E7-11E9-9B82-F7DBE5697425","first_name":"Alessandro"},{"id":"3F5D8856-F248-11E8-B48F-1D18A9856A87","first_name":"Josip","full_name":"Kukucka, Josip","last_name":"Kukucka"},{"full_name":"Sagi, Oliver","last_name":"Sagi","first_name":"Oliver","id":"71616374-A8E9-11E9-A7CA-09ECE5697425"},{"orcid":"0000-0003-2668-2401","full_name":"Martins, Frederico","last_name":"Martins","first_name":"Frederico","id":"38F80F9A-1CB8-11EA-BC76-B49B3DDC885E"},{"full_name":"Saez Mollejo, Jaime","last_name":"Saez Mollejo","first_name":"Jaime","id":"e0390f72-f6e0-11ea-865d-862393336714"},{"orcid":"0000-0002-7370-5357","full_name":"Prieto Gonzalez, Ivan","last_name":"Prieto Gonzalez","first_name":"Ivan","id":"2A307FE2-F248-11E8-B48F-1D18A9856A87"},{"id":"2ac7a0a2-3562-11eb-9256-fbd18ea55087","first_name":"Maksim","last_name":"Borovkov","full_name":"Borovkov, Maksim"},{"first_name":"Jordi","full_name":"Arbiol, Jordi","last_name":"Arbiol"},{"first_name":"Daniel","full_name":"Chrastina, Daniel","last_name":"Chrastina"},{"first_name":"Giovanni","last_name":"Isella","full_name":"Isella, Giovanni"},{"first_name":"Georgios","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","full_name":"Katsaros, Georgios","orcid":"0000-0001-8342-202X"}],"isi":1,"doi":"10.1038/s41563-021-01022-2","oa_version":"Preprint","arxiv":1,"publisher":"Springer Nature","day":"01","main_file_link":[{"url":"https://arxiv.org/abs/2011.13755","open_access":"1"}],"related_material":{"link":[{"url":"https://ist.ac.at/en/news/quantum-computing-with-holes/","description":"News on IST Homepage","relation":"press_release"}],"record":[{"id":"9323","relation":"research_data","status":"public"},{"relation":"dissertation_contains","status":"public","id":"10058"}]},"volume":20,"oa":1,"intvolume":"        20","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","issue":"8","acknowledgement":"This research was supported by the Scientific Service Units of Institute of Science and Technology (IST) Austria through resources provided by the Miba Machine Shop and the nanofabrication facility, and was made possible with the support of the NOMIS Foundation. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant agreements no. 844511 and no. 75441, and by the Austrian Science Fund FWF-P 30207 project. A.B. acknowledges support from the European Union Horizon 2020 FET project microSPIRE, no. 766955. M. Botifoll and J.A. acknowledge funding from Generalitat de Catalunya 2017 SGR 327. The Catalan Institute of Nanoscience and Nanotechnology (ICN2) is supported by the Severo Ochoa programme from the Spanish Ministery of Economy (MINECO) (grant no. SEV-2017-0706) and is funded by the Catalonian Research Centre (CERCA) Programme, Generalitat de Catalunya. Part of the present work has been performed within the framework of the Universitat Autónoma de Barcelona Materials Science PhD programme. Part of the HAADF scanning transmission electron microscopy was conducted in the Laboratorio de Microscopias Avanzadas at Instituto de Nanociencia de Aragon, Universidad de Zaragoza. ICN2 acknowledge support from the Spanish Superior Council of Scientific Research (CSIC) Research Platform on Quantum Technologies PTI-001. M.B. acknowledges funding from the Catalan Agency for Management of University and Research Grants (AGAUR) Generalitat de Catalunya formation of investigators (FI) PhD grant.","scopus_import":"1","date_updated":"2024-03-25T23:30:14Z","title":"A singlet triplet hole spin qubit in planar Ge","month":"08","article_processing_charge":"No","date_published":"2021-08-01T00:00:00Z","ec_funded":1,"publication":"Nature Materials","page":"1106–1112","_id":"8909","project":[{"name":"Majorana bound states in Ge/SiGe heterostructures","_id":"26A151DA-B435-11E9-9278-68D0E5697425","grant_number":"844511","call_identifier":"H2020"},{"grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"},{"grant_number":"P30207","_id":"2641CE5E-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","name":"Hole spin orbit qubits in Ge quantum wells"},{"name":"Hybrid Semiconductor - Superconductor Quantum Devices","_id":"262116AA-B435-11E9-9278-68D0E5697425"}],"external_id":{"arxiv":["2011.13755"],"isi":["000657596400001"]},"date_created":"2020-12-02T10:50:47Z"},{"publisher":"American Association for the Advancement of Science","day":"02","doi":"10.1126/science.abf1513","arxiv":1,"oa_version":"Submitted Version","author":[{"first_name":"Marco","id":"C0BB2FAC-D767-11E9-B658-BC13E6697425","last_name":"Valentini","full_name":"Valentini, Marco"},{"last_name":"Peñaranda","full_name":"Peñaranda, Fernando","first_name":"Fernando"},{"id":"340F461A-F248-11E8-B48F-1D18A9856A87","first_name":"Andrea C","last_name":"Hofmann","full_name":"Hofmann, Andrea C"},{"first_name":"Matthias","id":"33F94E3C-F248-11E8-B48F-1D18A9856A87","last_name":"Brauns","full_name":"Brauns, Matthias"},{"id":"4E01D6B4-F248-11E8-B48F-1D18A9856A87","first_name":"Robert","full_name":"Hauschild, Robert","orcid":"0000-0001-9843-3522","last_name":"Hauschild"},{"first_name":"Peter","last_name":"Krogstrup","full_name":"Krogstrup, Peter"},{"first_name":"Pablo","full_name":"San-Jose, Pablo","last_name":"San-Jose"},{"first_name":"Elsa","full_name":"Prada, Elsa","last_name":"Prada"},{"last_name":"Aguado","full_name":"Aguado, Ramón","first_name":"Ramón"},{"id":"38DB5788-F248-11E8-B48F-1D18A9856A87","first_name":"Georgios","last_name":"Katsaros","full_name":"Katsaros, Georgios","orcid":"0000-0001-8342-202X"}],"isi":1,"year":"2021","department":[{"_id":"GeKa"},{"_id":"Bio"}],"publication_identifier":{"issn":["00368075"],"eissn":["10959203"]},"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"article_type":"original","citation":{"mla":"Valentini, Marco, et al. “Nontopological Zero-Bias Peaks in Full-Shell Nanowires Induced by Flux-Tunable Andreev States.” <i>Science</i>, vol. 373, no. 6550, 82–88, American Association for the Advancement of Science, 2021, doi:<a href=\"https://doi.org/10.1126/science.abf1513\">10.1126/science.abf1513</a>.","ista":"Valentini M, Peñaranda F, Hofmann AC, Brauns M, Hauschild R, Krogstrup P, San-Jose P, Prada E, Aguado R, Katsaros G. 2021. Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states. Science. 373(6550), 82–88.","chicago":"Valentini, Marco, Fernando Peñaranda, Andrea C Hofmann, Matthias Brauns, Robert Hauschild, Peter Krogstrup, Pablo San-Jose, Elsa Prada, Ramón Aguado, and Georgios Katsaros. “Nontopological Zero-Bias Peaks in Full-Shell Nanowires Induced by Flux-Tunable Andreev States.” <i>Science</i>. American Association for the Advancement of Science, 2021. <a href=\"https://doi.org/10.1126/science.abf1513\">https://doi.org/10.1126/science.abf1513</a>.","ama":"Valentini M, Peñaranda F, Hofmann AC, et al. Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states. <i>Science</i>. 2021;373(6550). doi:<a href=\"https://doi.org/10.1126/science.abf1513\">10.1126/science.abf1513</a>","ieee":"M. Valentini <i>et al.</i>, “Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states,” <i>Science</i>, vol. 373, no. 6550. American Association for the Advancement of Science, 2021.","apa":"Valentini, M., Peñaranda, F., Hofmann, A. C., Brauns, M., Hauschild, R., Krogstrup, P., … Katsaros, G. (2021). Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states. <i>Science</i>. American Association for the Advancement of Science. <a href=\"https://doi.org/10.1126/science.abf1513\">https://doi.org/10.1126/science.abf1513</a>","short":"M. Valentini, F. Peñaranda, A.C. Hofmann, M. Brauns, R. Hauschild, P. Krogstrup, P. San-Jose, E. Prada, R. Aguado, G. Katsaros, Science 373 (2021)."},"type":"journal_article","quality_controlled":"1","abstract":[{"text":"A semiconducting nanowire fully wrapped by a superconducting shell has been proposed as a platform for obtaining Majorana modes at small magnetic fields. In this study, we demonstrate that the appearance of subgap states in such structures is actually governed by the junction region in tunneling spectroscopy measurements and not the full-shell nanowire itself. Short tunneling regions never show subgap states, whereas longer junctions always do. This can be understood in terms of quantum dots forming in the junction and hosting Andreev levels in the Yu-Shiba-Rusinov regime. The intricate magnetic field dependence of the Andreev levels, through both the Zeeman and Little-Parks effects, may result in robust zero-bias peaks—features that could be easily misinterpreted as originating from Majorana zero modes but are unrelated to topological superconductivity.","lang":"eng"}],"publication_status":"published","language":[{"iso":"eng"}],"status":"public","project":[{"_id":"262116AA-B435-11E9-9278-68D0E5697425","name":"Hybrid Semiconductor - Superconductor Quantum Devices"},{"name":"Majorana bound states in Ge/SiGe heterostructures","_id":"26A151DA-B435-11E9-9278-68D0E5697425","grant_number":"844511","call_identifier":"H2020"}],"_id":"8910","date_created":"2020-12-02T10:51:52Z","external_id":{"arxiv":["2008.02348"],"isi":["000677843100034"]},"publication":"Science","date_published":"2021-07-02T00:00:00Z","article_processing_charge":"No","ec_funded":1,"title":"Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states","date_updated":"2024-02-21T12:40:09Z","month":"07","scopus_import":"1","article_number":"82-88","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","issue":"6550","acknowledgement":"The authors thank A. Higginbotham, E. J. H. Lee and F. R. Martins for helpful discussions. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility; the NOMIS Foundation and Microsoft; the European Union’s Horizon 2020 research and innovation program under the Marie SklodowskaCurie grant agreement No 844511; the FETOPEN Grant Agreement No. 828948; the European Research Commission through the grant agreement HEMs-DAM No 716655; the Spanish Ministry of Science and Innovation through Grants PGC2018-097018-B-I00, PCI2018-093026, FIS2016-80434-P (AEI/FEDER, EU), RYC2011-09345 (Ram´on y Cajal Programme), and the Mar´ıa de Maeztu Programme for Units of Excellence in R&D (CEX2018-000805-M); the CSIC Research Platform on Quantum Technologies PTI-001.","oa":1,"intvolume":"       373","volume":373,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2008.02348"}],"related_material":{"link":[{"description":"News on IST Homepage","url":"https://ist.ac.at/en/news/unfinding-a-split-electron/","relation":"press_release"}],"record":[{"id":"13286","relation":"dissertation_contains","status":"public"},{"id":"9389","relation":"research_data","status":"public"}]}},{"doi":"10.15479/AT:ISTA:9389","file_date_updated":"2021-05-14T11:56:48Z","contributor":[{"last_name":"Valentini","contributor_type":"contact_person","first_name":"Marco","id":"C0BB2FAC-D767-11E9-B658-BC13E6697425"}],"oa_version":"Published Version","publisher":"Institute of Science and Technology Austria","_id":"9389","date_created":"2021-05-14T12:07:53Z","department":[{"_id":"GradSch"},{"_id":"GeKa"}],"date_updated":"2024-02-21T12:40:09Z","title":"Research data for \"Non-topological zero bias peaks in full-shell nanowires induced by flux tunable Andreev states\"","tmp":{"legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","name":"Creative Commons Public Domain Dedication (CC0 1.0)","short":"CC0 (1.0)","image":"/images/cc_0.png"},"year":"2021","article_processing_charge":"No","date_published":"2021-01-01T00:00:00Z","author":[{"last_name":"Valentini","full_name":"Valentini, Marco","id":"C0BB2FAC-D767-11E9-B658-BC13E6697425","first_name":"Marco"}],"file":[{"file_id":"9390","creator":"mvalenti","date_created":"2021-05-14T11:42:23Z","checksum":"80a905c4eef24dab6fb247e81a3d67f5","relation":"main_file","file_size":10572981,"content_type":"application/pdf","date_updated":"2021-05-14T11:42:23Z","file_name":"Notebook_Valentini.pdf","access_level":"open_access"},{"creator":"mvalenti","date_created":"2021-05-14T11:56:48Z","file_id":"9391","file_name":"Experimental_data.zip","access_level":"open_access","checksum":"1e61a7e63949448a8db0091cdac23570","relation":"main_file","date_updated":"2021-05-14T11:56:48Z","content_type":"application/x-zip-compressed","file_size":99076111}],"license":"https://creativecommons.org/publicdomain/zero/1.0/","type":"research_data","citation":{"chicago":"Valentini, Marco. “Research Data for ‘Non-Topological Zero Bias Peaks in Full-Shell Nanowires Induced by Flux Tunable Andreev States.’” Institute of Science and Technology Austria, 2021. <a href=\"https://doi.org/10.15479/AT:ISTA:9389\">https://doi.org/10.15479/AT:ISTA:9389</a>.","ama":"Valentini M. Research data for “Non-topological zero bias peaks in full-shell nanowires induced by flux tunable Andreev states.” 2021. doi:<a href=\"https://doi.org/10.15479/AT:ISTA:9389\">10.15479/AT:ISTA:9389</a>","mla":"Valentini, Marco. <i>Research Data for “Non-Topological Zero Bias Peaks in Full-Shell Nanowires Induced by Flux Tunable Andreev States.”</i> Institute of Science and Technology Austria, 2021, doi:<a href=\"https://doi.org/10.15479/AT:ISTA:9389\">10.15479/AT:ISTA:9389</a>.","ista":"Valentini M. 2021. Research data for ‘Non-topological zero bias peaks in full-shell nanowires induced by flux tunable Andreev states’, Institute of Science and Technology Austria, <a href=\"https://doi.org/10.15479/AT:ISTA:9389\">10.15479/AT:ISTA:9389</a>.","short":"M. Valentini, (2021).","apa":"Valentini, M. (2021). Research data for “Non-topological zero bias peaks in full-shell nanowires induced by flux tunable Andreev states.” Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/AT:ISTA:9389\">https://doi.org/10.15479/AT:ISTA:9389</a>","ieee":"M. Valentini, “Research data for ‘Non-topological zero bias peaks in full-shell nanowires induced by flux tunable Andreev states.’” Institute of Science and Technology Austria, 2021."},"acknowledged_ssus":[{"_id":"NanoFab"}],"ddc":["530"],"related_material":{"record":[{"status":"public","relation":"used_in_publication","id":"8910"}]},"abstract":[{"text":"This .zip File contains the transport data for  \"Non-topological zero bias peaks in full-shell nanowires induced by flux tunable Andreev states\" by M. Valentini, et. al.  \r\nThe measurements were done using Labber Software and the data is stored in the hdf5 file format.\r\nInstructions of how to read the data are in \"Notebook_Valentini.pdf\".","lang":"eng"}],"status":"public","has_accepted_license":"1","oa":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"},{"author":[{"full_name":"Phan, Duc T","last_name":"Phan","id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","first_name":"Duc T"},{"id":"5479D234-2D30-11EA-89CC-40953DDC885E","first_name":"Jorden L","last_name":"Senior","full_name":"Senior, Jorden L","orcid":"0000-0002-0672-9295"},{"last_name":"Ghazaryan","full_name":"Ghazaryan, Areg","orcid":"0000-0001-9666-3543","id":"4AF46FD6-F248-11E8-B48F-1D18A9856A87","first_name":"Areg"},{"first_name":"M.","last_name":"Hatefipour","full_name":"Hatefipour, M."},{"first_name":"W. M.","last_name":"Strickland","full_name":"Strickland, W. M."},{"first_name":"J.","full_name":"Shabani, J.","last_name":"Shabani"},{"full_name":"Serbyn, Maksym","orcid":"0000-0002-2399-5827","last_name":"Serbyn","first_name":"Maksym","id":"47809E7E-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Higginbotham, Andrew P","orcid":"0000-0003-2607-2363","last_name":"Higginbotham","first_name":"Andrew P","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87"}],"date_published":"2021-07-08T00:00:00Z","year":"2021","article_processing_charge":"No","ec_funded":1,"date_updated":"2024-02-21T12:36:52Z","title":"Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid","department":[{"_id":"MaSe"},{"_id":"AnHi"},{"_id":"MiLe"}],"month":"07","project":[{"name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","call_identifier":"H2020"}],"_id":"10029","date_created":"2021-09-21T08:41:02Z","day":"08","external_id":{"arxiv":["2107.03695"]},"publication":"arXiv","arxiv":1,"oa_version":"Preprint","article_number":"2107.03695","acknowledgement":"This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility. JS and AG were supported by funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement No.754411.","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa":1,"abstract":[{"text":"Superconductor-semiconductor hybrids are platforms for realizing effective p-wave superconductivity. Spin-orbit coupling, combined with the proximity effect, causes the two-dimensional semiconductor to inherit p±ip intraband pairing, and application of magnetic field can then result in transitions to the normal state, partial Bogoliubov Fermi surfaces, or topological phases with Majorana modes. Experimentally probing the hybrid superconductor-semiconductor interface is challenging due to the shunting effect of the conventional superconductor. Consequently, the nature of induced pairing remains an open question. Here, we use the circuit quantum electrodynamics architecture to probe induced superconductivity in a two dimensional Al-InAs hybrid system. We observe a strong suppression of superfluid density and enhanced dissipation driven by magnetic field, which cannot be accounted for by the depairing theory of an s-wave superconductor. These observations are explained by a picture of independent intraband p±ip superconductors giving way to partial Bogoliubov Fermi surfaces, and allow for the first characterization of key properties of the hybrid superconducting system.","lang":"eng"}],"publication_status":"submitted","main_file_link":[{"url":"https://arxiv.org/abs/2107.03695","open_access":"1"}],"related_material":{"record":[{"id":"10851","status":"public","relation":"later_version"},{"id":"9636","status":"public","relation":"research_data"}]},"language":[{"iso":"eng"}],"status":"public","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"citation":{"ista":"Phan DT, Senior JL, Ghazaryan A, Hatefipour M, Strickland WM, Shabani J, Serbyn M, Higginbotham AP. Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid. arXiv, 2107.03695.","mla":"Phan, Duc T., et al. “Breakdown of Induced P±ip Pairing in a Superconductor-Semiconductor Hybrid.” <i>ArXiv</i>, 2107.03695.","chicago":"Phan, Duc T, Jorden L Senior, Areg Ghazaryan, M. Hatefipour, W. M. Strickland, J. Shabani, Maksym Serbyn, and Andrew P Higginbotham. “Breakdown of Induced P±ip Pairing in a Superconductor-Semiconductor Hybrid.” <i>ArXiv</i>, n.d.","ama":"Phan DT, Senior JL, Ghazaryan A, et al. Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid. <i>arXiv</i>.","ieee":"D. T. Phan <i>et al.</i>, “Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid,” <i>arXiv</i>. .","apa":"Phan, D. T., Senior, J. L., Ghazaryan, A., Hatefipour, M., Strickland, W. M., Shabani, J., … Higginbotham, A. P. (n.d.). Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid. <i>arXiv</i>.","short":"D.T. Phan, J.L. Senior, A. Ghazaryan, M. Hatefipour, W.M. Strickland, J. Shabani, M. Serbyn, A.P. Higginbotham, ArXiv (n.d.)."},"type":"preprint"},{"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"ddc":["515"],"type":"dissertation","citation":{"ieee":"L. Portinale, “Discrete-to-continuum limits of transport problems and gradient flows in the space of measures,” Institute of Science and Technology Austria, 2021.","apa":"Portinale, L. (2021). <i>Discrete-to-continuum limits of transport problems and gradient flows in the space of measures</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:10030\">https://doi.org/10.15479/at:ista:10030</a>","short":"L. Portinale, Discrete-to-Continuum Limits of Transport Problems and Gradient Flows in the Space of Measures, Institute of Science and Technology Austria, 2021.","ista":"Portinale L. 2021. Discrete-to-continuum limits of transport problems and gradient flows in the space of measures. Institute of Science and Technology Austria.","mla":"Portinale, Lorenzo. <i>Discrete-to-Continuum Limits of Transport Problems and Gradient Flows in the Space of Measures</i>. Institute of Science and Technology Austria, 2021, doi:<a href=\"https://doi.org/10.15479/at:ista:10030\">10.15479/at:ista:10030</a>.","ama":"Portinale L. Discrete-to-continuum limits of transport problems and gradient flows in the space of measures. 2021. doi:<a href=\"https://doi.org/10.15479/at:ista:10030\">10.15479/at:ista:10030</a>","chicago":"Portinale, Lorenzo. “Discrete-to-Continuum Limits of Transport Problems and Gradient Flows in the Space of Measures.” Institute of Science and Technology Austria, 2021. <a href=\"https://doi.org/10.15479/at:ista:10030\">https://doi.org/10.15479/at:ista:10030</a>."},"file":[{"creator":"cchlebak","date_created":"2021-09-21T09:17:34Z","file_id":"10032","access_level":"closed","file_name":"tex_and_pictures.zip","file_size":3876668,"content_type":"application/x-zip-compressed","date_updated":"2022-03-10T12:14:42Z","checksum":"8cd60dcb8762e8f21867e21e8001e183","relation":"source_file"},{"access_level":"open_access","file_name":"thesis_portinale_Final (1).pdf","content_type":"application/pdf","date_updated":"2021-09-27T11:14:31Z","file_size":2532673,"checksum":"9789e9d967c853c1503ec7f307170279","relation":"main_file","creator":"cchlebak","date_created":"2021-09-27T11:14:31Z","file_id":"10047"}],"language":[{"iso":"eng"}],"status":"public","has_accepted_license":"1","publication_status":"published","abstract":[{"text":"This PhD thesis is primarily focused on the study of discrete transport problems, introduced for the first time in the seminal works of Maas [Maa11] and Mielke [Mie11] on finite state Markov chains and reaction-diffusion equations, respectively. More in detail, my research focuses on the study of transport costs on graphs, in particular the convergence and the stability of such problems in the discrete-to-continuum limit. This thesis also includes some results concerning\r\nnon-commutative optimal transport. The first chapter of this thesis consists of a general introduction to the optimal transport problems, both in the discrete, the continuous, and the non-commutative setting. Chapters 2 and 3 present the content of two works, obtained in collaboration with Peter Gladbach, Eva Kopfer, and Jan Maas, where we have been able to show the convergence of discrete transport costs on periodic graphs to suitable continuous ones, which can be described by means of a homogenisation result. We first focus on the particular case of quadratic costs on the real line and then extending the result to more general costs in arbitrary dimension. Our results are the first complete characterisation of limits of transport costs on periodic graphs in arbitrary dimension which do not rely on any additional symmetry. In Chapter 4 we turn our attention to one of the intriguing connection between evolution equations and optimal transport, represented by the theory of gradient flows. We show that discrete gradient flow structures associated to a finite volume approximation of a certain class of diffusive equations (Fokker–Planck) is stable in the limit of vanishing meshes, reproving the convergence of the scheme via the method of evolutionary Γ-convergence and exploiting a more variational point of view on the problem. This is based on a collaboration with Dominik Forkert and Jan Maas. Chapter 5 represents a change of perspective, moving away from the discrete world and reaching the non-commutative one. As in the discrete case, we discuss how classical tools coming from the commutative optimal transport can be translated into the setting of density matrices. In particular, in this final chapter we present a non-commutative version of the Schrödinger problem (or entropic regularised optimal transport problem) and discuss existence and characterisation of minimisers, a duality result, and present a non-commutative version of the well-known Sinkhorn algorithm to compute the above mentioned optimisers. This is based on a joint work with Dario Feliciangeli and Augusto Gerolin. Finally, Appendix A and B contain some additional material and discussions, with particular attention to Harnack inequalities and the regularity of flows on discrete spaces.","lang":"eng"}],"day":"22","publisher":"Institute of Science and Technology Austria","oa_version":"Published Version","doi":"10.15479/at:ista:10030","author":[{"last_name":"Portinale","full_name":"Portinale, Lorenzo","id":"30AD2CBC-F248-11E8-B48F-1D18A9856A87","first_name":"Lorenzo"}],"year":"2021","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"degree_awarded":"PhD","department":[{"_id":"GradSch"},{"_id":"JaMa"}],"publication_identifier":{"issn":["2663-337X"]},"license":"https://creativecommons.org/licenses/by/4.0/","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","acknowledgement":"The author gratefully acknowledges support by the Austrian Science Fund (FWF), grants No W1245.","oa":1,"alternative_title":["ISTA Thesis"],"related_material":{"record":[{"relation":"part_of_dissertation","status":"public","id":"10022"},{"relation":"part_of_dissertation","status":"public","id":"9792"},{"id":"7573","status":"public","relation":"part_of_dissertation"}]},"date_created":"2021-09-21T09:14:15Z","_id":"10030","project":[{"name":"Dissipation and Dispersion in Nonlinear Partial Differential Equations","_id":"260788DE-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"_id":"fc31cba2-9c52-11eb-aca3-ff467d239cd2","grant_number":"F6504","name":"Taming Complexity in Partial Differential Systems"}],"file_date_updated":"2022-03-10T12:14:42Z","supervisor":[{"id":"4C5696CE-F248-11E8-B48F-1D18A9856A87","first_name":"Jan","last_name":"Maas","full_name":"Maas, Jan","orcid":"0000-0002-0845-1338"}],"date_published":"2021-09-22T00:00:00Z","article_processing_charge":"No","month":"09","date_updated":"2023-09-07T13:31:06Z","title":"Discrete-to-continuum limits of transport problems and gradient flows in the space of measures"},{"language":[{"iso":"eng"}],"has_accepted_license":"1","status":"public","abstract":[{"lang":"eng","text":"Quantum information and computation has become a vast field paved with opportunities for researchers and investors. As large multinational companies and international funds are heavily investing in quantum technologies it is still a question which platform is best suited for the task of realizing a scalable quantum processor. In this work we investigate hole spins in Ge quantum wells. These hold great promise as they possess several favorable properties: a small effective mass, a strong spin-orbit coupling, long relaxation time and an inherent immunity to hyperfine noise. All these characteristics helped Ge hole spin qubits to evolve from a single qubit to a fully entangled four qubit processor in only 3 years. Here, we investigated a qubit approach leveraging the large out-of-plane g-factors of heavy hole states in Ge quantum dots. We found this qubit to be reproducibly operable at extremely low magnetic field and at large speeds while maintaining coherence. This was possible because large differences of g-factors in adjacent dots can be achieved in the out-of-plane direction. In the in-plane direction the small g-factors, on the other hand, can be altered very effectively by the confinement potentials. Here, we found that this can even lead to a sign change of the g-factors. The resulting g-factor difference alters the dynamics of the system drastically and produces effects typically attributed to a spin-orbit induced spin-flip term.  The investigations carried out in this thesis give further insights into the possibilities of holes in Ge and reveal new physical properties that need to be considered when designing future spin qubit experiments."}],"publication_status":"published","ddc":["621","539"],"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"citation":{"short":"D. Jirovec, Singlet-Triplet Qubits and Spin-Orbit Interaction in 2-Dimensional Ge Hole Gases, Institute of Science and Technology Austria, 2021.","apa":"Jirovec, D. (2021). <i>Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional Ge hole gases</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:10058\">https://doi.org/10.15479/at:ista:10058</a>","ieee":"D. Jirovec, “Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional Ge hole gases,” Institute of Science and Technology Austria, 2021.","ama":"Jirovec D. Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional Ge hole gases. 2021. doi:<a href=\"https://doi.org/10.15479/at:ista:10058\">10.15479/at:ista:10058</a>","chicago":"Jirovec, Daniel. “Singlet-Triplet Qubits and Spin-Orbit Interaction in 2-Dimensional Ge Hole Gases.” Institute of Science and Technology Austria, 2021. <a href=\"https://doi.org/10.15479/at:ista:10058\">https://doi.org/10.15479/at:ista:10058</a>.","ista":"Jirovec D. 2021. Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional Ge hole gases. Institute of Science and Technology Austria.","mla":"Jirovec, Daniel. <i>Singlet-Triplet Qubits and Spin-Orbit Interaction in 2-Dimensional Ge Hole Gases</i>. Institute of Science and Technology Austria, 2021, doi:<a href=\"https://doi.org/10.15479/at:ista:10058\">10.15479/at:ista:10058</a>."},"type":"dissertation","file":[{"access_level":"closed","file_name":"PHD_Thesis_Jirovec_Source.zip","embargo_to":"open_access","date_updated":"2022-12-20T23:30:07Z","content_type":"application/x-zip-compressed","file_size":32397600,"relation":"source_file","checksum":"ad6bcb24083ed7c02baaf1885c9ea3d5","creator":"djirovec","date_created":"2021-09-30T14:29:14Z","file_id":"10061"},{"content_type":"application/pdf","date_updated":"2022-12-20T23:30:07Z","file_size":26910829,"relation":"main_file","checksum":"5fbe08d4f66d1153e04c47971538fae8","access_level":"open_access","file_name":"PHD_Thesis_pdfa2b_1.pdf","file_id":"10087","embargo":"2022-10-06","creator":"djirovec","date_created":"2021-10-05T07:56:49Z"}],"author":[{"first_name":"Daniel","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","last_name":"Jirovec","orcid":"0000-0002-7197-4801","full_name":"Jirovec, Daniel"}],"year":"2021","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"degree_awarded":"PhD","publication_identifier":{"issn":["2663-337X"]},"department":[{"_id":"GradSch"},{"_id":"GeKa"}],"day":"05","publisher":"Institute of Science and Technology Austria","oa_version":"Published Version","doi":"10.15479/at:ista:10058","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","acknowledgement":"The author gratefully acknowledges support by the Austrian Science Fund (FWF), grants No P30207, and the Nomis foundation.","oa":1,"alternative_title":["ISTA Thesis"],"related_material":{"record":[{"relation":"part_of_dissertation","status":"public","id":"8831"},{"status":"public","relation":"part_of_dissertation","id":"10065"},{"id":"10066","relation":"part_of_dissertation","status":"public"},{"id":"8909","relation":"part_of_dissertation","status":"public"},{"id":"5816","status":"public","relation":"part_of_dissertation"}]},"date_published":"2021-10-05T00:00:00Z","keyword":["qubits","quantum computing","holes"],"article_processing_charge":"No","month":"10","date_updated":"2023-09-08T11:41:08Z","title":"Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional Ge hole gases","date_created":"2021-09-30T07:53:49Z","project":[{"name":"Hole spin orbit qubits in Ge quantum wells","call_identifier":"FWF","_id":"2641CE5E-B435-11E9-9278-68D0E5697425","grant_number":"P30207"}],"_id":"10058","page":"151","file_date_updated":"2022-12-20T23:30:07Z","supervisor":[{"orcid":"0000-0001-8342-202X","full_name":"Katsaros, Georgios","last_name":"Katsaros","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","first_name":"Georgios"}]},{"publication_status":"submitted","abstract":[{"lang":"eng","text":"The potential of Si and SiGe-based devices for the scaling of quantum circuits is tainted by device variability. Each device needs to be tuned to operation conditions. We give a key step towards tackling this variability with an algorithm that, without modification, is capable of tuning a 4-gate Si FinFET, a 5-gate GeSi nanowire and a 7-gate SiGe heterostructure double quantum dot device from scratch. We achieve tuning times of 30, 10, and 92 minutes, respectively. The algorithm also provides insight into the parameter space landscape for each of these devices. These results show that overarching solutions for the tuning of quantum devices are enabled by machine learning."}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2107.12975"}],"related_material":{"record":[{"id":"10058","relation":"dissertation_contains","status":"public"}]},"language":[{"iso":"eng"}],"status":"public","article_number":"2107.12975","acknowledgement":"We acknowledge Ang Li, Erik P. A. M. Bakkers (University of Eindhoven) for the fabrication of the Ge/Si nanowire. This work was supported by the Royal Society, the EPSRC National Quantum Technology Hub in Networked Quantum Information Technology (EP/M013243/1), Quantum Technology Capital (EP/N014995/1), EPSRC Platform Grant\r\n(EP/R029229/1), the European Research Council (Grant agreement 948932), the Swiss Nanoscience Institute, the\r\nNCCR SPIN, the EU H2020 European Microkelvin Platform EMP grant No. 824109, the Scientific Service Units\r\nof IST Austria through resources provided by the nanofabrication facility and, the FWF-P30207 project. This publication was also made possible through support from Templeton World Charity Foundation and John Templeton Foundation. The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of the Templeton Foundations.","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa":1,"citation":{"ama":"Severin B, Lennon DT, Camenzind LC, et al. Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/arXiv.2107.12975\">10.48550/arXiv.2107.12975</a>","chicago":"Severin, B., D. T. Lennon, L. C. Camenzind, F. Vigneau, F. Fedele, Daniel Jirovec, A. Ballabio, et al. “Cross-Architecture Tuning of Silicon and SiGe-Based Quantum Devices Using Machine Learning.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/arXiv.2107.12975\">https://doi.org/10.48550/arXiv.2107.12975</a>.","mla":"Severin, B., et al. “Cross-Architecture Tuning of Silicon and SiGe-Based Quantum Devices Using Machine Learning.” <i>ArXiv</i>, 2107.12975, doi:<a href=\"https://doi.org/10.48550/arXiv.2107.12975\">10.48550/arXiv.2107.12975</a>.","ista":"Severin B, Lennon DT, Camenzind LC, Vigneau F, Fedele F, Jirovec D, Ballabio A, Chrastina D, Isella G, Kruijf M de, Carballido MJ, Svab S, Kuhlmann AV, Braakman FR, Geyer S, Froning FNM, Moon H, Osborne MA, Sejdinovic D, Katsaros G, Zumbühl DM, Briggs GAD, Ares N. Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning. arXiv, 2107.12975.","short":"B. Severin, D.T. Lennon, L.C. Camenzind, F. Vigneau, F. Fedele, D. Jirovec, A. Ballabio, D. Chrastina, G. Isella, M. de Kruijf, M.J. Carballido, S. Svab, A.V. Kuhlmann, F.R. Braakman, S. Geyer, F.N.M. Froning, H. Moon, M.A. Osborne, D. Sejdinovic, G. Katsaros, D.M. Zumbühl, G.A.D. Briggs, N. Ares, ArXiv (n.d.).","apa":"Severin, B., Lennon, D. T., Camenzind, L. C., Vigneau, F., Fedele, F., Jirovec, D., … Ares, N. (n.d.). Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/arXiv.2107.12975\">https://doi.org/10.48550/arXiv.2107.12975</a>","ieee":"B. Severin <i>et al.</i>, “Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning,” <i>arXiv</i>. ."},"type":"preprint","acknowledged_ssus":[{"_id":"NanoFab"}],"title":"Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning","date_updated":"2024-03-25T23:30:14Z","department":[{"_id":"GeKa"}],"month":"07","author":[{"full_name":"Severin, B.","last_name":"Severin","first_name":"B."},{"full_name":"Lennon, D. T.","last_name":"Lennon","first_name":"D. T."},{"first_name":"L. C.","last_name":"Camenzind","full_name":"Camenzind, L. C."},{"first_name":"F.","last_name":"Vigneau","full_name":"Vigneau, F."},{"first_name":"F.","full_name":"Fedele, F.","last_name":"Fedele"},{"first_name":"Daniel","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","last_name":"Jirovec","orcid":"0000-0002-7197-4801","full_name":"Jirovec, Daniel"},{"full_name":"Ballabio, A.","last_name":"Ballabio","first_name":"A."},{"first_name":"D.","last_name":"Chrastina","full_name":"Chrastina, D."},{"first_name":"G.","last_name":"Isella","full_name":"Isella, G."},{"first_name":"M. de","full_name":"Kruijf, M. de","last_name":"Kruijf"},{"first_name":"M. J.","full_name":"Carballido, M. J.","last_name":"Carballido"},{"full_name":"Svab, S.","last_name":"Svab","first_name":"S."},{"first_name":"A. V.","full_name":"Kuhlmann, A. V.","last_name":"Kuhlmann"},{"first_name":"F. R.","full_name":"Braakman, F. R.","last_name":"Braakman"},{"full_name":"Geyer, S.","last_name":"Geyer","first_name":"S."},{"full_name":"Froning, F. N. M.","last_name":"Froning","first_name":"F. N. M."},{"first_name":"H.","full_name":"Moon, H.","last_name":"Moon"},{"first_name":"M. A.","full_name":"Osborne, M. A.","last_name":"Osborne"},{"last_name":"Sejdinovic","full_name":"Sejdinovic, D.","first_name":"D."},{"first_name":"Georgios","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8342-202X","full_name":"Katsaros, Georgios","last_name":"Katsaros"},{"last_name":"Zumbühl","full_name":"Zumbühl, D. M.","first_name":"D. M."},{"first_name":"G. A. D.","full_name":"Briggs, G. A. D.","last_name":"Briggs"},{"first_name":"N.","full_name":"Ares, N.","last_name":"Ares"}],"date_published":"2021-07-27T00:00:00Z","article_processing_charge":"No","year":"2021","publication":"arXiv","doi":"10.48550/arXiv.2107.12975","oa_version":"Preprint","arxiv":1,"project":[{"name":"Hole spin orbit qubits in Ge quantum wells","_id":"2641CE5E-B435-11E9-9278-68D0E5697425","grant_number":"P30207","call_identifier":"FWF"}],"_id":"10066","date_created":"2021-10-01T12:40:22Z","day":"27","external_id":{"arxiv":["2107.12975"]}},{"project":[{"name":"International IST Doctoral Program","call_identifier":"H2020","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","grant_number":"665385"},{"_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"},{"name":"Bottom-up Engineering for Thermoelectric Applications","grant_number":"M02889","_id":"9B8804FC-BA93-11EA-9121-9846C619BF3A"},{"name":"HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of Semiconductors for Waste Heat Recovery","_id":"9B8F7476-BA93-11EA-9121-9846C619BF3A"}],"_id":"10123","date_created":"2021-10-11T20:07:24Z","external_id":{"pmid":["34626034"],"isi":["000709899300001"]},"file_date_updated":"2022-02-03T13:16:14Z","publication":"Advanced Materials","date_published":"2021-12-29T00:00:00Z","keyword":["mechanical engineering","mechanics of materials","general materials science"],"article_processing_charge":"Yes (via OA deal)","ec_funded":1,"date_updated":"2023-08-14T07:25:27Z","title":"The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe","month":"12","scopus_import":"1","article_number":"2106858","issue":"52","acknowledgement":"Y.L. and M.C. contributed equally to this work. This research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by Electron Microscopy Facility (EMF) and the Nanofabrication Facility (NNF). This work was financially supported by IST Austria and the Werner Siemens Foundation. Y.L. acknowledges funding from the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 754411. M.C. has received funding from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 665385. Y.Y. and O.C.-M. acknowledge the financial support from DFG within the project SFB 917: Nanoswitches. J.L. is a Serra Húnter Fellow and is grateful to ICREA Academia program. C.C. acknowledges funding from the FWF “Lise Meitner Fellowship” grant agreement M 2889-N.","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","intvolume":"        33","oa":1,"volume":33,"related_material":{"record":[{"status":"public","relation":"dissertation_contains","id":"12885"}]},"publisher":"Wiley","day":"29","doi":"10.1002/adma.202106858","oa_version":"Published Version","author":[{"orcid":"0000-0001-7313-6740","full_name":"Liu, Yu","last_name":"Liu","first_name":"Yu","id":"2A70014E-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Calcabrini, Mariano","orcid":"0000-0003-4566-5877","last_name":"Calcabrini","id":"45D7531A-F248-11E8-B48F-1D18A9856A87","first_name":"Mariano"},{"first_name":"Yuan","full_name":"Yu, Yuan","last_name":"Yu"},{"last_name":"Genç","full_name":"Genç, Aziz","first_name":"Aziz"},{"first_name":"Cheng","id":"9E331C2E-9F27-11E9-AE48-5033E6697425","last_name":"Chang","full_name":"Chang, Cheng","orcid":"0000-0002-9515-4277"},{"full_name":"Costanzo, Tommaso","orcid":"0000-0001-9732-3815","last_name":"Costanzo","id":"D93824F4-D9BA-11E9-BB12-F207E6697425","first_name":"Tommaso"},{"full_name":"Kleinhanns, Tobias","last_name":"Kleinhanns","id":"8BD9DE16-AB3C-11E9-9C8C-2A03E6697425","first_name":"Tobias"},{"first_name":"Seungho","id":"BB243B88-D767-11E9-B658-BC13E6697425","last_name":"Lee","orcid":"0000-0002-6962-8598","full_name":"Lee, Seungho"},{"first_name":"Jordi","last_name":"Llorca","full_name":"Llorca, Jordi"},{"last_name":"Cojocaru‐Mirédin","full_name":"Cojocaru‐Mirédin, Oana","first_name":"Oana"},{"id":"43C61214-F248-11E8-B48F-1D18A9856A87","first_name":"Maria","last_name":"Ibáñez","full_name":"Ibáñez, Maria","orcid":"0000-0001-5013-2843"}],"isi":1,"year":"2021","department":[{"_id":"EM-Fac"},{"_id":"MaIb"}],"publication_identifier":{"issn":["0935-9648"],"eissn":["1521-4095"]},"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"acknowledged_ssus":[{"_id":"EM-Fac"},{"_id":"NanoFab"}],"ddc":["620"],"article_type":"original","file":[{"file_id":"10720","date_created":"2022-02-03T13:16:14Z","creator":"cchlebak","relation":"main_file","checksum":"990bccc527c64d85cf1c97885110b5f4","file_size":5595666,"date_updated":"2022-02-03T13:16:14Z","content_type":"application/pdf","file_name":"2021_AdvancedMaterials_Liu.pdf","access_level":"open_access","success":1}],"citation":{"ista":"Liu Y, Calcabrini M, Yu Y, Genç A, Chang C, Costanzo T, Kleinhanns T, Lee S, Llorca J, Cojocaru‐Mirédin O, Ibáñez M. 2021. The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe. Advanced Materials. 33(52), 2106858.","mla":"Liu, Yu, et al. “The Importance of Surface Adsorbates in Solution‐processed Thermoelectric Materials: The Case of SnSe.” <i>Advanced Materials</i>, vol. 33, no. 52, 2106858, Wiley, 2021, doi:<a href=\"https://doi.org/10.1002/adma.202106858\">10.1002/adma.202106858</a>.","ama":"Liu Y, Calcabrini M, Yu Y, et al. The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe. <i>Advanced Materials</i>. 2021;33(52). doi:<a href=\"https://doi.org/10.1002/adma.202106858\">10.1002/adma.202106858</a>","chicago":"Liu, Yu, Mariano Calcabrini, Yuan Yu, Aziz Genç, Cheng Chang, Tommaso Costanzo, Tobias Kleinhanns, et al. “The Importance of Surface Adsorbates in Solution‐processed Thermoelectric Materials: The Case of SnSe.” <i>Advanced Materials</i>. Wiley, 2021. <a href=\"https://doi.org/10.1002/adma.202106858\">https://doi.org/10.1002/adma.202106858</a>.","ieee":"Y. Liu <i>et al.</i>, “The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe,” <i>Advanced Materials</i>, vol. 33, no. 52. Wiley, 2021.","apa":"Liu, Y., Calcabrini, M., Yu, Y., Genç, A., Chang, C., Costanzo, T., … Ibáñez, M. (2021). The importance of surface adsorbates in solution‐processed thermoelectric materials: The case of SnSe. <i>Advanced Materials</i>. Wiley. <a href=\"https://doi.org/10.1002/adma.202106858\">https://doi.org/10.1002/adma.202106858</a>","short":"Y. Liu, M. Calcabrini, Y. Yu, A. Genç, C. Chang, T. Costanzo, T. Kleinhanns, S. Lee, J. Llorca, O. Cojocaru‐Mirédin, M. Ibáñez, Advanced Materials 33 (2021)."},"type":"journal_article","quality_controlled":"1","publication_status":"published","abstract":[{"lang":"eng","text":"Solution synthesis of particles emerged as an alternative to prepare thermoelectric materials with less demanding processing conditions than conventional solid-state synthetic methods. However, solution synthesis generally involves the presence of additional molecules or ions belonging to the precursors or added to enable solubility and/or regulate nucleation and growth. These molecules or ions can end up in the particles as surface adsorbates and interfere in the material properties. This work demonstrates that ionic adsorbates, in particular Na⁺ ions, are electrostatically adsorbed in SnSe particles synthesized in water and play a crucial role not only in directing the material nano/microstructure but also in determining the transport properties of the consolidated material. In dense pellets prepared by sintering SnSe particles, Na remains within the crystal lattice as dopant, in dislocations, precipitates, and forming grain boundary complexions. These results highlight the importance of considering all the possible unintentional impurities to establish proper structure-property relationships and control material properties in solution-processed thermoelectric materials."}],"language":[{"iso":"eng"}],"has_accepted_license":"1","status":"public","pmid":1},{"scopus_import":"1","oa":1,"intvolume":"         3","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","issue":"2","acknowledgement":"This research and related results were made possible with the support of the NOMIS Foundation. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility, the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant agreement No. 844511 Grant Agreement No. 862046. ICN2 acknowledge funding from Generalitat de Catalunya 2017 SGR 327. ICN2 is supported by the Severo Ochoa program from Spanish MINECO (Grant No. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autnoma de Barcelona Materials Science PhD program. The HAADF-STEM microscopy was conducted in the Laboratorio de Microscopias Avanzadas at Instituto de Nanociencia de Aragon-Universidad de Zaragoza. Authors acknowledge the LMA-INA for offering access to their instruments and expertise. We acknowledge support from CSIC Research Platform on Quantum Technologies PTI-001. This project has received funding from the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 823717 ESTEEM3. M.B. acknowledges support from SUR Generalitat de Catalunya and the EU Social Fund; project ref. 2020 FI 00103. G.S. and M.V. acknowledge support through a projectruimte grant associated with the Netherlands Organization of Scientific Research (NWO). J.D. acknowledges support through FRIPRO-project 274853, which is funded by the Research Council of Norway.","article_number":"L022005","related_material":{"record":[{"relation":"earlier_version","status":"public","id":"8831"},{"status":"public","relation":"research_data","id":"8834"}]},"volume":3,"external_id":{"arxiv":["2012.00322"]},"date_created":"2021-12-16T18:50:57Z","_id":"10559","project":[{"grant_number":"844511","_id":"26A151DA-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"Majorana bound states in Ge/SiGe heterostructures"},{"grant_number":"862046","_id":"237E5020-32DE-11EA-91FC-C7463DDC885E","call_identifier":"H2020","name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS"}],"publication":"Physical Review Research","file_date_updated":"2021-12-17T08:12:37Z","ec_funded":1,"article_processing_charge":"No","keyword":["general engineering"],"date_published":"2021-04-15T00:00:00Z","month":"04","date_updated":"2024-02-21T12:41:26Z","title":"Enhancement of proximity-induced superconductivity in a planar Ge hole gas","article_type":"original","ddc":["620"],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"type":"journal_article","citation":{"ista":"Aggarwal K, Hofmann AC, Jirovec D, Prieto Gonzalez I, Sammak A, Botifoll M, Martí-Sánchez S, Veldhorst M, Arbiol J, Scappucci G, Danon J, Katsaros G. 2021. Enhancement of proximity-induced superconductivity in a planar Ge hole gas. Physical Review Research. 3(2), L022005.","mla":"Aggarwal, Kushagra, et al. “Enhancement of Proximity-Induced Superconductivity in a Planar Ge Hole Gas.” <i>Physical Review Research</i>, vol. 3, no. 2, L022005, American Physical Society, 2021, doi:<a href=\"https://doi.org/10.1103/physrevresearch.3.l022005\">10.1103/physrevresearch.3.l022005</a>.","ama":"Aggarwal K, Hofmann AC, Jirovec D, et al. Enhancement of proximity-induced superconductivity in a planar Ge hole gas. <i>Physical Review Research</i>. 2021;3(2). doi:<a href=\"https://doi.org/10.1103/physrevresearch.3.l022005\">10.1103/physrevresearch.3.l022005</a>","chicago":"Aggarwal, Kushagra, Andrea C Hofmann, Daniel Jirovec, Ivan Prieto Gonzalez, Amir Sammak, Marc Botifoll, Sara Martí-Sánchez, et al. “Enhancement of Proximity-Induced Superconductivity in a Planar Ge Hole Gas.” <i>Physical Review Research</i>. American Physical Society, 2021. <a href=\"https://doi.org/10.1103/physrevresearch.3.l022005\">https://doi.org/10.1103/physrevresearch.3.l022005</a>.","ieee":"K. Aggarwal <i>et al.</i>, “Enhancement of proximity-induced superconductivity in a planar Ge hole gas,” <i>Physical Review Research</i>, vol. 3, no. 2. American Physical Society, 2021.","short":"K. Aggarwal, A.C. Hofmann, D. Jirovec, I. Prieto Gonzalez, A. Sammak, M. Botifoll, S. Martí-Sánchez, M. Veldhorst, J. Arbiol, G. Scappucci, J. Danon, G. Katsaros, Physical Review Research 3 (2021).","apa":"Aggarwal, K., Hofmann, A. C., Jirovec, D., Prieto Gonzalez, I., Sammak, A., Botifoll, M., … Katsaros, G. (2021). Enhancement of proximity-induced superconductivity in a planar Ge hole gas. <i>Physical Review Research</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevresearch.3.l022005\">https://doi.org/10.1103/physrevresearch.3.l022005</a>"},"file":[{"creator":"cchlebak","date_created":"2021-12-17T08:12:37Z","file_id":"10561","file_name":"2021_PhysRevResearch_Aggarwal.pdf","access_level":"open_access","success":1,"checksum":"60a1bc9c9b616b1b155044bb8cfc6484","relation":"main_file","file_size":1917512,"content_type":"application/pdf","date_updated":"2021-12-17T08:12:37Z"}],"quality_controlled":"1","status":"public","has_accepted_license":"1","language":[{"iso":"eng"}],"publication_status":"published","abstract":[{"lang":"eng","text":"Hole gases in planar germanium can have high mobilities in combination with strong spin-orbit interaction and electrically tunable g factors, and are therefore emerging as a promising platform for creating hybrid superconductor-semiconductor devices. A key challenge towards hybrid Ge-based quantum technologies is the design of high-quality interfaces and superconducting contacts that are robust against magnetic fields. In this work, by combining the assets of aluminum, which provides good contact to the Ge, and niobium, which has a significant superconducting gap, we demonstrate highly transparent low-disordered JoFETs with relatively large ICRN products that are capable of withstanding high magnetic fields. We furthermore demonstrate the ability of phase-biasing individual JoFETs, opening up an avenue to explore topological superconductivity in planar Ge. The persistence of superconductivity in the reported hybrid devices beyond 1.8 T paves the way towards integrating spin qubits and proximity-induced superconductivity on the same chip."}],"day":"15","publisher":"American Physical Society","arxiv":1,"oa_version":"Published Version","doi":"10.1103/physrevresearch.3.l022005","year":"2021","author":[{"first_name":"Kushagra","id":"b22ab905-3539-11eb-84c3-fc159dcd79cb","last_name":"Aggarwal","orcid":"0000-0001-9985-9293","full_name":"Aggarwal, Kushagra"},{"first_name":"Andrea C","id":"340F461A-F248-11E8-B48F-1D18A9856A87","last_name":"Hofmann","full_name":"Hofmann, Andrea C"},{"first_name":"Daniel","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","full_name":"Jirovec, Daniel","orcid":"0000-0002-7197-4801","last_name":"Jirovec"},{"last_name":"Prieto Gonzalez","orcid":"0000-0002-7370-5357","full_name":"Prieto Gonzalez, Ivan","id":"2A307FE2-F248-11E8-B48F-1D18A9856A87","first_name":"Ivan"},{"full_name":"Sammak, Amir","last_name":"Sammak","first_name":"Amir"},{"last_name":"Botifoll","full_name":"Botifoll, Marc","first_name":"Marc"},{"first_name":"Sara","full_name":"Martí-Sánchez, Sara","last_name":"Martí-Sánchez"},{"first_name":"Menno","full_name":"Veldhorst, Menno","last_name":"Veldhorst"},{"first_name":"Jordi","last_name":"Arbiol","full_name":"Arbiol, Jordi"},{"last_name":"Scappucci","full_name":"Scappucci, Giordano","first_name":"Giordano"},{"first_name":"Jeroen","full_name":"Danon, Jeroen","last_name":"Danon"},{"last_name":"Katsaros","full_name":"Katsaros, Georgios","orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","first_name":"Georgios"}],"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"department":[{"_id":"GeKa"}],"publication_identifier":{"issn":["2643-1564"]}},{"type":"journal_article","citation":{"mla":"Godard, Benoit G., et al. “Combined Effect of Cell Geometry and Polarity Domains Determines the Orientation of Unequal Division.” <i>ELife</i>, vol. 10, e75639, eLife Sciences Publications, 2021, doi:<a href=\"https://doi.org/10.7554/eLife.75639\">10.7554/eLife.75639</a>.","ista":"Godard BG, Dumollard R, Heisenberg C-PJ, Mcdougall A. 2021. Combined effect of cell geometry and polarity domains determines the orientation of unequal division. eLife. 10, e75639.","ama":"Godard BG, Dumollard R, Heisenberg C-PJ, Mcdougall A. Combined effect of cell geometry and polarity domains determines the orientation of unequal division. <i>eLife</i>. 2021;10. doi:<a href=\"https://doi.org/10.7554/eLife.75639\">10.7554/eLife.75639</a>","chicago":"Godard, Benoit G, Remi Dumollard, Carl-Philipp J Heisenberg, and Alex Mcdougall. “Combined Effect of Cell Geometry and Polarity Domains Determines the Orientation of Unequal Division.” <i>ELife</i>. eLife Sciences Publications, 2021. <a href=\"https://doi.org/10.7554/eLife.75639\">https://doi.org/10.7554/eLife.75639</a>.","ieee":"B. G. Godard, R. Dumollard, C.-P. J. Heisenberg, and A. Mcdougall, “Combined effect of cell geometry and polarity domains determines the orientation of unequal division,” <i>eLife</i>, vol. 10. eLife Sciences Publications, 2021.","apa":"Godard, B. G., Dumollard, R., Heisenberg, C.-P. J., &#38; Mcdougall, A. (2021). Combined effect of cell geometry and polarity domains determines the orientation of unequal division. <i>ELife</i>. eLife Sciences Publications. <a href=\"https://doi.org/10.7554/eLife.75639\">https://doi.org/10.7554/eLife.75639</a>","short":"B.G. Godard, R. Dumollard, C.-P.J. Heisenberg, A. Mcdougall, ELife 10 (2021)."},"file":[{"checksum":"759c7a873d554c48a6639e6350746ca6","relation":"main_file","file_size":7769934,"date_updated":"2022-01-10T09:40:37Z","content_type":"application/pdf","file_name":"2021_eLife_Godard.pdf","access_level":"open_access","success":1,"file_id":"10611","date_created":"2022-01-10T09:40:37Z","creator":"alisjak"}],"article_type":"original","ddc":["570"],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"Bio"}],"language":[{"iso":"eng"}],"status":"public","has_accepted_license":"1","publication_status":"published","abstract":[{"lang":"eng","text":"Cell division orientation is thought to result from a competition between cell geometry and polarity domains controlling the position of the mitotic spindle during mitosis. Depending on the level of cell shape anisotropy or the strength of the polarity domain, one dominates the other and determines the orientation of the spindle. Whether and how such competition is also at work to determine unequal cell division (UCD), producing daughter cells of different size, remains unclear. Here, we show that cell geometry and polarity domains cooperate, rather than compete, in positioning the cleavage plane during UCDs in early ascidian embryos. We found that the UCDs and their orientation at the ascidian third cleavage rely on the spindle tilting in an anisotropic cell shape, and cortical polarity domains exerting different effects on spindle astral microtubules. By systematically varying mitotic cell shape, we could modulate the effect of attractive and repulsive polarity domains and consequently generate predicted daughter cell size asymmetries and position. We therefore propose that the spindle position during UCD is set by the combined activities of cell geometry and polarity domains, where cell geometry modulates the effect of cortical polarity domain(s)."}],"quality_controlled":"1","oa_version":"Published Version","doi":"10.7554/eLife.75639","day":"21","publisher":"eLife Sciences Publications","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"department":[{"_id":"CaHe"}],"publication_identifier":{"eissn":["2050-084X"]},"author":[{"first_name":"Benoit G","id":"33280250-F248-11E8-B48F-1D18A9856A87","last_name":"Godard","full_name":"Godard, Benoit G"},{"first_name":"Remi","full_name":"Dumollard, Remi","last_name":"Dumollard"},{"last_name":"Heisenberg","full_name":"Heisenberg, Carl-Philipp J","orcid":"0000-0002-0912-4566","first_name":"Carl-Philipp J","id":"39427864-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Alex","full_name":"Mcdougall, Alex","last_name":"Mcdougall"}],"isi":1,"year":"2021","scopus_import":"1","volume":10,"acknowledgement":"We thank members of the Heisenberg and McDougall groups for technical advice and discussion. We are grateful to the Bioimaging and Nanofabrication facilities of IST Austria and the Imaging Platform (PIM) and animal facility (CRB) of Institut de la Mer de Villefranche (IMEV), which is supported by EMBRC-France, whose French state funds are managed by the ANR within the Investments of the Future program under reference ANR-10-INBS-0, for continuous support. This work was supported by a collaborative grant from the French Government funding agency Agence National de la Recherche to McDougall (ANR 'MorCell': ANR-17-CE 13-0028) and the Austrian Science Fund to Heisenberg (FWF: I 3601-B27).","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","oa":1,"intvolume":"        10","article_number":"e75639","file_date_updated":"2022-01-10T09:40:37Z","publication":"eLife","date_created":"2022-01-09T23:01:26Z","external_id":{"isi":["000733610100001"]},"project":[{"grant_number":"I03601","_id":"2646861A-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","name":"Control of embryonic cleavage pattern"}],"_id":"10606","month":"12","date_updated":"2023-08-17T06:32:44Z","title":"Combined effect of cell geometry and polarity domains determines the orientation of unequal division","date_published":"2021-12-21T00:00:00Z","article_processing_charge":"No"},{"article_processing_charge":"No","date_published":"2021-07-01T00:00:00Z","month":"07","date_updated":"2023-09-07T13:33:27Z","title":"Fertilization-induced deformations are controlled by the actin cortex and a mitochondria-rich subcortical layer in ascidian oocytes","date_created":"2021-07-01T14:50:17Z","_id":"9623","page":"111","supervisor":[{"full_name":"Heisenberg, Carl-Philipp J","orcid":"0000-0002-0912-4566","last_name":"Heisenberg","first_name":"Carl-Philipp J","id":"39427864-F248-11E8-B48F-1D18A9856A87"}],"file_date_updated":"2022-07-02T22:30:06Z","oa":1,"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","related_material":{"record":[{"id":"9750","status":"public","relation":"part_of_dissertation"},{"id":"9006","status":"public","relation":"part_of_dissertation"}]},"alternative_title":["ISTA Thesis"],"license":"https://creativecommons.org/licenses/by-nc-nd/4.0/","year":"2021","author":[{"first_name":"Silvia","id":"2F1E1758-F248-11E8-B48F-1D18A9856A87","full_name":"Caballero Mancebo, Silvia","orcid":"0000-0002-5223-3346","last_name":"Caballero Mancebo"}],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","short":"CC BY-NC-ND (4.0)","image":"/images/cc_by_nc_nd.png"},"department":[{"_id":"GradSch"},{"_id":"CaHe"}],"publication_identifier":{"issn":["2663-337X"],"isbn":["978-3-99078-012-1"]},"degree_awarded":"PhD","publisher":"Institute of Science and Technology Austria","oa_version":"Published Version","doi":"10.15479/at:ista:9623","has_accepted_license":"1","status":"public","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Cytoplasmic reorganizations are essential for morphogenesis. In large cells like oocytes, these reorganizations become crucial in patterning the oocyte for later stages of embryonic development. Ascidians oocytes reorganize their cytoplasm (ooplasm) in a spectacular manner. Ooplasmic reorganization is initiated at fertilization with the contraction of the actomyosin cortex along the animal-vegetal axis of the oocyte, driving the accumulation of cortical endoplasmic reticulum (cER), maternal mRNAs associated to it and a mitochondria-rich subcortical layer – the myoplasm – in a region of the vegetal pole termed contraction pole (CP). Here we have used the species Phallusia mammillata to investigate the changes in cell shape that accompany these reorganizations and the mechanochemical mechanisms underlining CP formation.\r\nWe report that the length of the animal-vegetal (AV) axis oscillates upon fertilization: it first undergoes a cycle of fast elongation-lengthening followed by a slow expansion of mainly the vegetal pole (VP) of the cell. We show that the fast oscillation corresponds to a dynamic polarization of the actin cortex as a result of a fertilization-induced increase in cortical tension in the oocyte that triggers a rupture of the cortex at the animal pole and the establishment of vegetal-directed cortical flows. These flows are responsible for the vegetal accumulation of actin causing the VP to flatten. \r\nWe find that the slow expansion of the VP, leading to CP formation, correlates with a relaxation of the vegetal cortex and that the myoplasm plays a role in the expansion. We show that the myoplasm is a solid-like layer that buckles under compression forces arising from the contracting actin cortex at the VP. Straightening of the myoplasm when actin flows stops, facilitates the expansion of the VP and the CP. Altogether, our results present a previously unrecognized role for the myoplasm in ascidian ooplasmic segregation. \r\n"}],"publication_status":"published","acknowledged_ssus":[{"_id":"Bio"},{"_id":"EM-Fac"},{"_id":"NanoFab"},{"_id":"M-Shop"}],"ddc":["570"],"citation":{"ieee":"S. Caballero Mancebo, “Fertilization-induced deformations are controlled by the actin cortex and a mitochondria-rich subcortical layer in ascidian oocytes,” Institute of Science and Technology Austria, 2021.","short":"S. Caballero Mancebo, Fertilization-Induced Deformations Are Controlled by the Actin Cortex and a Mitochondria-Rich Subcortical Layer in Ascidian Oocytes, Institute of Science and Technology Austria, 2021.","apa":"Caballero Mancebo, S. (2021). <i>Fertilization-induced deformations are controlled by the actin cortex and a mitochondria-rich subcortical layer in ascidian oocytes</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:9623\">https://doi.org/10.15479/at:ista:9623</a>","mla":"Caballero Mancebo, Silvia. <i>Fertilization-Induced Deformations Are Controlled by the Actin Cortex and a Mitochondria-Rich Subcortical Layer in Ascidian Oocytes</i>. Institute of Science and Technology Austria, 2021, doi:<a href=\"https://doi.org/10.15479/at:ista:9623\">10.15479/at:ista:9623</a>.","ista":"Caballero Mancebo S. 2021. Fertilization-induced deformations are controlled by the actin cortex and a mitochondria-rich subcortical layer in ascidian oocytes. Institute of Science and Technology Austria.","ama":"Caballero Mancebo S. Fertilization-induced deformations are controlled by the actin cortex and a mitochondria-rich subcortical layer in ascidian oocytes. 2021. doi:<a href=\"https://doi.org/10.15479/at:ista:9623\">10.15479/at:ista:9623</a>","chicago":"Caballero Mancebo, Silvia. “Fertilization-Induced Deformations Are Controlled by the Actin Cortex and a Mitochondria-Rich Subcortical Layer in Ascidian Oocytes.” Institute of Science and Technology Austria, 2021. <a href=\"https://doi.org/10.15479/at:ista:9623\">https://doi.org/10.15479/at:ista:9623</a>."},"type":"dissertation","file":[{"creator":"scaballe","date_created":"2021-07-01T14:48:54Z","file_id":"9624","embargo_to":"open_access","file_name":"PhDThesis_SCM.docx","access_level":"closed","checksum":"e039225a47ef32666d59bf35ddd30ecf","relation":"source_file","content_type":"application/vnd.openxmlformats-officedocument.wordprocessingml.document","date_updated":"2022-07-02T22:30:06Z","file_size":131946790},{"file_id":"9625","creator":"scaballe","date_created":"2021-07-01T14:46:25Z","embargo":"2022-07-01","relation":"main_file","checksum":"dd4d78962ea94ad95e97ca7d9af08f4b","file_size":17094958,"date_updated":"2022-07-02T22:30:06Z","content_type":"application/pdf","file_name":"PhDThesis_SCM.pdf","access_level":"open_access"}]},{"publication_status":"published","abstract":[{"text":"This work is concerned with two fascinating circuit quantum electrodynamics components, the Josephson junction and the geometric superinductor, and the interesting experiments that can be done by combining the two. The Josephson junction has revolutionized the field of superconducting circuits as a non-linear dissipation-less circuit element and is used in almost all superconducting qubit implementations since the 90s. On the other hand, the superinductor is a relatively new circuit element introduced as a key component of the fluxonium qubit in 2009. This is an inductor with characteristic impedance larger than the resistance quantum and self-resonance frequency in the GHz regime. The combination of these two elements can occur in two fundamental ways: in parallel and in series. When connected in parallel the two create the fluxonium qubit, a loop with large inductance and a rich energy spectrum reliant on quantum tunneling. On the other hand placing the two elements in series aids with the measurement of the IV curve of a single Josephson junction in a high impedance environment. In this limit theory predicts that the junction will behave as its dual element: the phase-slip junction. While the Josephson junction acts as a non-linear inductor the phase-slip junction has the behavior of a non-linear capacitance and can be used to measure new Josephson junction phenomena, namely Coulomb blockade of Cooper pairs and phase-locked Bloch oscillations. The latter experiment allows for a direct link between frequency and current which is an elusive connection in quantum metrology. This work introduces the geometric superinductor, a superconducting circuit element where the high inductance is due to the geometry rather than the material properties of the superconductor, realized from a highly miniaturized superconducting planar coil. These structures will be described and characterized as resonators and qubit inductors and progress towards the measurement of phase-locked Bloch oscillations will be presented.","lang":"eng"}],"language":[{"iso":"eng"}],"status":"public","has_accepted_license":"1","file":[{"content_type":"application/x-zip-compressed","date_updated":"2021-09-06T08:39:47Z","file_size":151387283,"relation":"source_file","checksum":"3cd1986efde5121d7581f6fcf9090da8","access_level":"closed","file_name":"GeometricSuperinductorsForCQED.zip","file_id":"9924","date_created":"2021-08-16T09:33:21Z","creator":"mperuzzo"},{"date_created":"2021-08-18T14:20:06Z","creator":"mperuzzo","file_id":"9939","file_name":"GeometricSuperinductorsAndTheirApplicationsIncQED-1b.pdf","access_level":"open_access","relation":"main_file","checksum":"50928c621cdf0775d7a5906b9dc8602c","file_size":17596344,"date_updated":"2021-09-06T08:39:47Z","content_type":"application/pdf"},{"file_id":"9940","description":"Extra copy of the thesis as PDF/A-2b","creator":"mperuzzo","date_created":"2021-08-18T14:20:09Z","file_size":17592425,"content_type":"application/pdf","date_updated":"2021-09-06T08:39:47Z","checksum":"37f486aa1b622fe44af00d627ec13f6c","relation":"other","access_level":"closed","file_name":"GeometricSuperinductorsAndTheirApplicationsIncQED-2b.pdf"}],"citation":{"ieee":"M. Peruzzo, “Geometric superinductors and their applications in circuit quantum electrodynamics,” Institute of Science and Technology Austria, 2021.","apa":"Peruzzo, M. (2021). <i>Geometric superinductors and their applications in circuit quantum electrodynamics</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:9920\">https://doi.org/10.15479/at:ista:9920</a>","short":"M. Peruzzo, Geometric Superinductors and Their Applications in Circuit Quantum Electrodynamics, Institute of Science and Technology Austria, 2021.","ista":"Peruzzo M. 2021. Geometric superinductors and their applications in circuit quantum electrodynamics. Institute of Science and Technology Austria.","mla":"Peruzzo, Matilda. <i>Geometric Superinductors and Their Applications in Circuit Quantum Electrodynamics</i>. Institute of Science and Technology Austria, 2021, doi:<a href=\"https://doi.org/10.15479/at:ista:9920\">10.15479/at:ista:9920</a>.","chicago":"Peruzzo, Matilda. “Geometric Superinductors and Their Applications in Circuit Quantum Electrodynamics.” Institute of Science and Technology Austria, 2021. <a href=\"https://doi.org/10.15479/at:ista:9920\">https://doi.org/10.15479/at:ista:9920</a>.","ama":"Peruzzo M. Geometric superinductors and their applications in circuit quantum electrodynamics. 2021. doi:<a href=\"https://doi.org/10.15479/at:ista:9920\">10.15479/at:ista:9920</a>"},"type":"dissertation","ddc":["539"],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"degree_awarded":"PhD","department":[{"_id":"GradSch"},{"_id":"JoFi"}],"publication_identifier":{"issn":["2663-337X"],"isbn":["978-3-99078-013-8"]},"author":[{"id":"3F920B30-F248-11E8-B48F-1D18A9856A87","first_name":"Matilda","last_name":"Peruzzo","full_name":"Peruzzo, Matilda","orcid":"0000-0002-3415-4628"}],"year":"2021","doi":"10.15479/at:ista:9920","oa_version":"Published Version","publisher":"Institute of Science and Technology Austria","day":"19","alternative_title":["ISTA Thesis"],"related_material":{"record":[{"id":"9928","status":"public","relation":"part_of_dissertation"},{"id":"8755","relation":"part_of_dissertation","status":"public"}]},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","oa":1,"title":"Geometric superinductors and their applications in circuit quantum electrodynamics","date_updated":"2024-09-10T12:23:56Z","month":"08","date_published":"2021-08-19T00:00:00Z","article_processing_charge":"No","keyword":["quantum computing","superinductor","quantum metrology"],"file_date_updated":"2021-09-06T08:39:47Z","supervisor":[{"full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","last_name":"Fink","first_name":"Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"page":"149","_id":"9920","date_created":"2021-08-16T09:44:09Z"},{"scopus_import":"1","acknowledgement":"We thank W. Hughes for analytic and numerical modeling during the early stages of this work, J. Koch for discussions and support with the scqubits package, R. Sett, P. Zielinski, and L. Drmic for software development, and G. Katsaros for equipment support, as well as the MIBA workshop and the Institute of Science and Technology Austria nanofabrication facility. We thank I. Pop, S. Deleglise, and E. Flurin for discussions. This work was supported by a NOMIS Foundation research grant, the Austrian Science Fund (FWF) through BeyondC (F7105), and IST Austria. M.P. is the recipient of a Pöttinger scholarship at IST Austria. E.R. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria.","issue":"4","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","intvolume":"         2","oa":1,"volume":2,"related_material":{"record":[{"id":"13057","relation":"research_data","status":"public"},{"id":"9920","status":"public","relation":"dissertation_contains"}]},"date_created":"2021-08-17T08:14:18Z","external_id":{"arxiv":["2106.05882"],"isi":["000723015100001"]},"_id":"9928","project":[{"name":"Integrating superconducting quantum circuits","call_identifier":"FWF","_id":"26927A52-B435-11E9-9278-68D0E5697425","grant_number":"F07105"},{"call_identifier":"H2020","grant_number":"665385","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","name":"International IST Doctoral Program"},{"_id":"2622978C-B435-11E9-9278-68D0E5697425","name":"Hybrid Semiconductor - Superconductor Quantum Devices"}],"page":"040341","file_date_updated":"2022-01-18T11:29:33Z","publication":"PRX Quantum","ec_funded":1,"date_published":"2021-11-24T00:00:00Z","keyword":["quantum physics","mesoscale and nanoscale physics"],"article_processing_charge":"No","month":"11","date_updated":"2023-09-07T13:31:22Z","title":"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction","article_type":"original","ddc":["530"],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"type":"journal_article","citation":{"apa":"Peruzzo, M., Hassani, F., Szep, G., Trioni, A., Redchenko, E., Zemlicka, M., &#38; Fink, J. M. (2021). Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. <i>PRX Quantum</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PRXQuantum.2.040341\">https://doi.org/10.1103/PRXQuantum.2.040341</a>","short":"M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M. Fink, PRX Quantum 2 (2021) 040341.","ieee":"M. Peruzzo <i>et al.</i>, “Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction,” <i>PRX Quantum</i>, vol. 2, no. 4. American Physical Society, p. 040341, 2021.","ama":"Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. <i>PRX Quantum</i>. 2021;2(4):040341. doi:<a href=\"https://doi.org/10.1103/PRXQuantum.2.040341\">10.1103/PRXQuantum.2.040341</a>","chicago":"Peruzzo, Matilda, Farid Hassani, Gregory Szep, Andrea Trioni, Elena Redchenko, Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction.” <i>PRX Quantum</i>. American Physical Society, 2021. <a href=\"https://doi.org/10.1103/PRXQuantum.2.040341\">https://doi.org/10.1103/PRXQuantum.2.040341</a>.","ista":"Peruzzo M, Hassani F, Szep G, Trioni A, Redchenko E, Zemlicka M, Fink JM. 2021. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. PRX Quantum. 2(4), 040341.","mla":"Peruzzo, Matilda, et al. “Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction.” <i>PRX Quantum</i>, vol. 2, no. 4, American Physical Society, 2021, p. 040341, doi:<a href=\"https://doi.org/10.1103/PRXQuantum.2.040341\">10.1103/PRXQuantum.2.040341</a>."},"file":[{"checksum":"36eb41ea43d8ca22b0efab12419e4eb2","relation":"main_file","file_size":4247422,"date_updated":"2022-01-18T11:29:33Z","content_type":"application/pdf","file_name":"2021_PRXQuantum_Peruzzo.pdf","access_level":"open_access","success":1,"file_id":"10641","date_created":"2022-01-18T11:29:33Z","creator":"cchlebak"}],"quality_controlled":"1","language":[{"iso":"eng"}],"has_accepted_license":"1","status":"public","abstract":[{"lang":"eng","text":"There are two elementary superconducting qubit types that derive directly from the quantum harmonic oscillator. In one, the inductor is replaced by a nonlinear Josephson junction to realize the widely used charge qubits with a compact phase variable and a discrete charge wave function. In the other, the junction is added in parallel, which gives rise to an extended phase variable, continuous wave functions, and a rich energy-level structure due to the loop topology. While the corresponding rf superconducting quantum interference device Hamiltonian was introduced as a quadratic quasi-one-dimensional potential approximation to describe the fluxonium qubit implemented with long Josephson-junction arrays, in this work we implement it directly using a linear superinductor formed by a single uninterrupted aluminum wire. We present a large variety of qubits, all stemming from the same circuit but with drastically different characteristic energy scales. This includes flux and fluxonium qubits but also the recently introduced quasicharge qubit with strongly enhanced zero-point phase fluctuations and a heavily suppressed flux dispersion. The use of a geometric inductor results in high reproducibility of the inductive energy as guaranteed by top-down lithography—a key ingredient for intrinsically protected superconducting qubits."}],"publication_status":"published","day":"24","publisher":"American Physical Society","oa_version":"Published Version","arxiv":1,"doi":"10.1103/PRXQuantum.2.040341","isi":1,"author":[{"orcid":"0000-0002-3415-4628","full_name":"Peruzzo, Matilda","last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","first_name":"Matilda"},{"id":"2AED110C-F248-11E8-B48F-1D18A9856A87","first_name":"Farid","last_name":"Hassani","full_name":"Hassani, Farid","orcid":"0000-0001-6937-5773"},{"full_name":"Szep, Gregory","last_name":"Szep","first_name":"Gregory"},{"full_name":"Trioni, Andrea","last_name":"Trioni","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","first_name":"Andrea"},{"id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","first_name":"Elena","last_name":"Redchenko","full_name":"Redchenko, Elena"},{"full_name":"Zemlicka, Martin","last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","first_name":"Martin"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","first_name":"Johannes M","last_name":"Fink","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X"}],"year":"2021","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"publication_identifier":{"eissn":["2691-3399"]},"department":[{"_id":"JoFi"},{"_id":"NanoFab"},{"_id":"M-Shop"}]},{"ec_funded":1,"date_published":"2020-06-01T00:00:00Z","article_processing_charge":"Yes (via OA deal)","month":"06","date_updated":"2024-02-21T12:44:01Z","title":"Zero field splitting of heavy-hole states in quantum dots","date_created":"2020-08-06T09:25:04Z","external_id":{"pmid":["32479090"],"isi":["000548893200066"]},"_id":"8203","project":[{"name":"Towards scalable hut wire quantum devices","call_identifier":"FWF","grant_number":"P32235","_id":"237B3DA4-32DE-11EA-91FC-C7463DDC885E"},{"grant_number":"862046","_id":"237E5020-32DE-11EA-91FC-C7463DDC885E","call_identifier":"H2020","name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS"}],"page":"5201-5206","file_date_updated":"2020-08-06T09:35:37Z","publication":"Nano Letters","acknowledgement":"We acknowledge G. Burkard, V. N. Golovach, C. Kloeffel, D.Loss, P. Rabl, and M. Rancič ́ for helpful discussions. We\r\nfurther acknowledge T. Adletzberger, J. Aguilera, T. Asenov, S. Bagiante, T. Menner, L. Shafeek, P. Taus, P. Traunmüller, and D. Waldhausl for their invaluable assistance. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility, by the FWF-P 32235 project, by the National Key R&D Program of China (2016YFA0301701, 2016YFA0300600), and by the European Union’s Horizon 2020 research and innovation program under grant agreement no. 862046. All data of this publication are available at 10.15479/AT:ISTA:7689.","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","issue":"7","oa":1,"intvolume":"        20","volume":20,"related_material":{"record":[{"status":"public","relation":"research_data","id":"7689"}]},"scopus_import":"1","author":[{"last_name":"Katsaros","orcid":"0000-0001-8342-202X","full_name":"Katsaros, Georgios","first_name":"Georgios","id":"38DB5788-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Josip","id":"3F5D8856-F248-11E8-B48F-1D18A9856A87","last_name":"Kukucka","full_name":"Kukucka, Josip"},{"first_name":"Lada","id":"31E9F056-F248-11E8-B48F-1D18A9856A87","last_name":"Vukušić","orcid":"0000-0003-2424-8636","full_name":"Vukušić, Lada"},{"id":"35DF8E50-F248-11E8-B48F-1D18A9856A87","first_name":"Hannes","last_name":"Watzinger","full_name":"Watzinger, Hannes"},{"first_name":"Fei","full_name":"Gao, Fei","last_name":"Gao"},{"first_name":"Ting","last_name":"Wang","orcid":"0000-0002-4619-9575","full_name":"Wang, Ting"},{"first_name":"Jian-Jun","full_name":"Zhang, Jian-Jun","last_name":"Zhang"},{"first_name":"Karsten","last_name":"Held","full_name":"Held, Karsten"}],"isi":1,"year":"2020","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"publication_identifier":{"eissn":["1530-6992"],"issn":["1530-6984"]},"department":[{"_id":"GeKa"}],"day":"01","publisher":"American Chemical Society","oa_version":"Published Version","doi":"10.1021/acs.nanolett.0c01466","quality_controlled":"1","language":[{"iso":"eng"}],"pmid":1,"has_accepted_license":"1","status":"public","publication_status":"published","abstract":[{"text":"Using inelastic cotunneling spectroscopy we observe a zero field splitting within the spin triplet manifold of Ge hut wire quantum dots. The states with spin ±1 in the confinement direction are energetically favored by up to 55 μeV compared to the spin 0 triplet state because of the strong spin–orbit coupling. The reported effect should be observable in a broad class of strongly confined hole quantum-dot systems and might need to be considered when operating hole spin qubits.","lang":"eng"}],"article_type":"original","ddc":["530"],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"type":"journal_article","citation":{"chicago":"Katsaros, Georgios, Josip Kukucka, Lada Vukušić, Hannes Watzinger, Fei Gao, Ting Wang, Jian-Jun Zhang, and Karsten Held. “Zero Field Splitting of Heavy-Hole States in Quantum Dots.” <i>Nano Letters</i>. American Chemical Society, 2020. <a href=\"https://doi.org/10.1021/acs.nanolett.0c01466\">https://doi.org/10.1021/acs.nanolett.0c01466</a>.","ama":"Katsaros G, Kukucka J, Vukušić L, et al. Zero field splitting of heavy-hole states in quantum dots. <i>Nano Letters</i>. 2020;20(7):5201-5206. doi:<a href=\"https://doi.org/10.1021/acs.nanolett.0c01466\">10.1021/acs.nanolett.0c01466</a>","mla":"Katsaros, Georgios, et al. “Zero Field Splitting of Heavy-Hole States in Quantum Dots.” <i>Nano Letters</i>, vol. 20, no. 7, American Chemical Society, 2020, pp. 5201–06, doi:<a href=\"https://doi.org/10.1021/acs.nanolett.0c01466\">10.1021/acs.nanolett.0c01466</a>.","ista":"Katsaros G, Kukucka J, Vukušić L, Watzinger H, Gao F, Wang T, Zhang J-J, Held K. 2020. Zero field splitting of heavy-hole states in quantum dots. Nano Letters. 20(7), 5201–5206.","apa":"Katsaros, G., Kukucka, J., Vukušić, L., Watzinger, H., Gao, F., Wang, T., … Held, K. (2020). Zero field splitting of heavy-hole states in quantum dots. <i>Nano Letters</i>. American Chemical Society. <a href=\"https://doi.org/10.1021/acs.nanolett.0c01466\">https://doi.org/10.1021/acs.nanolett.0c01466</a>","short":"G. Katsaros, J. Kukucka, L. Vukušić, H. Watzinger, F. Gao, T. Wang, J.-J. Zhang, K. Held, Nano Letters 20 (2020) 5201–5206.","ieee":"G. Katsaros <i>et al.</i>, “Zero field splitting of heavy-hole states in quantum dots,” <i>Nano Letters</i>, vol. 20, no. 7. American Chemical Society, pp. 5201–5206, 2020."},"file":[{"success":1,"access_level":"open_access","file_name":"2020_NanoLetters_Katsaros.pdf","date_updated":"2020-08-06T09:35:37Z","content_type":"application/pdf","file_size":3308906,"relation":"main_file","date_created":"2020-08-06T09:35:37Z","creator":"dernst","file_id":"8204"}]},{"article_processing_charge":"No","date_published":"2020-09-08T00:00:00Z","month":"09","title":"In vitro reconstitution of a Rab activation switch","date_updated":"2023-09-07T13:17:06Z","date_created":"2020-09-08T08:53:53Z","_id":"8341","page":"215","supervisor":[{"orcid":"0000-0001-7309-9724","full_name":"Loose, Martin","last_name":"Loose","id":"462D4284-F248-11E8-B48F-1D18A9856A87","first_name":"Martin"}],"file_date_updated":"2021-09-16T12:49:12Z","oa":1,"acknowledgement":"My thanks goes to the Loose lab members, BioImaging, Life Science and Nanofabrication Facilities and the wonderful international community at IST for sharing this experience with me.","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","related_material":{"record":[{"id":"7580","relation":"part_of_dissertation","status":"public"}]},"alternative_title":["ISTA Thesis"],"license":"https://creativecommons.org/licenses/by-nc-sa/4.0/","year":"2020","author":[{"last_name":"Bezeljak","full_name":"Bezeljak, Urban","orcid":"0000-0003-1365-5631","first_name":"Urban","id":"2A58201A-F248-11E8-B48F-1D18A9856A87"}],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode","name":"Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","short":"CC BY-NC-SA (4.0)","image":"/images/cc_by_nc_sa.png"},"department":[{"_id":"MaLo"}],"publication_identifier":{"issn":["2663-337X"]},"degree_awarded":"PhD","day":"08","publisher":"Institute of Science and Technology Austria","oa_version":"Published Version","doi":"10.15479/AT:ISTA:8341","status":"public","has_accepted_license":"1","language":[{"iso":"eng"}],"abstract":[{"text":"One of the most striking hallmarks of the eukaryotic cell is the presence of intracellular vesicles and organelles. Each of these membrane-enclosed compartments has a distinct composition of lipids and proteins, which is essential for accurate membrane traffic and homeostasis. Interestingly, their biochemical identities are achieved with the help\r\nof small GTPases of the Rab family, which cycle between GDP- and GTP-bound forms on the selected membrane surface. While this activity switch is well understood for an individual protein, how Rab GTPases collectively transition between states to generate decisive signal propagation in space and time is unclear. In my PhD thesis, I present\r\nin vitro reconstitution experiments with theoretical modeling to systematically study a minimal Rab5 activation network from bottom-up. We find that positive feedback based on known molecular interactions gives rise to bistable GTPase activity switching on system’s scale. Furthermore, we determine that collective transition near the critical\r\npoint is intrinsically stochastic and provide evidence that the inactive Rab5 abundance on the membrane can shape the network response. Finally, we demonstrate that collective switching can spread on the lipid bilayer as a traveling activation wave, representing a possible emergent activity pattern in endosomal maturation. Together, our\r\nfindings reveal new insights into the self-organization properties of signaling networks away from chemical equilibrium. Our work highlights the importance of systematic characterization of biochemical systems in well-defined physiological conditions. This way, we were able to answer long-standing open questions in the field and close the gap between regulatory processes on a molecular scale and emergent responses on system’s level.","lang":"eng"}],"publication_status":"published","ddc":["570"],"acknowledged_ssus":[{"_id":"Bio"},{"_id":"LifeSc"},{"_id":"NanoFab"}],"type":"dissertation","citation":{"ista":"Bezeljak U. 2020. In vitro reconstitution of a Rab activation switch. Institute of Science and Technology Austria.","mla":"Bezeljak, Urban. <i>In Vitro Reconstitution of a Rab Activation Switch</i>. Institute of Science and Technology Austria, 2020, doi:<a href=\"https://doi.org/10.15479/AT:ISTA:8341\">10.15479/AT:ISTA:8341</a>.","chicago":"Bezeljak, Urban. “In Vitro Reconstitution of a Rab Activation Switch.” Institute of Science and Technology Austria, 2020. <a href=\"https://doi.org/10.15479/AT:ISTA:8341\">https://doi.org/10.15479/AT:ISTA:8341</a>.","ama":"Bezeljak U. In vitro reconstitution of a Rab activation switch. 2020. doi:<a href=\"https://doi.org/10.15479/AT:ISTA:8341\">10.15479/AT:ISTA:8341</a>","ieee":"U. Bezeljak, “In vitro reconstitution of a Rab activation switch,” Institute of Science and Technology Austria, 2020.","short":"U. Bezeljak, In Vitro Reconstitution of a Rab Activation Switch, Institute of Science and Technology Austria, 2020.","apa":"Bezeljak, U. (2020). <i>In vitro reconstitution of a Rab activation switch</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/AT:ISTA:8341\">https://doi.org/10.15479/AT:ISTA:8341</a>"},"file":[{"file_id":"8342","date_created":"2020-09-08T09:00:29Z","creator":"dernst","checksum":"70871b335a595252a66c6bbf0824fb02","relation":"source_file","file_size":65246782,"content_type":"application/x-zip-compressed","date_updated":"2021-09-16T12:49:12Z","file_name":"2020_Urban_Bezeljak_Thesis_TeX.zip","access_level":"closed"},{"content_type":"application/pdf","date_updated":"2021-09-16T12:49:12Z","file_size":31259058,"relation":"main_file","checksum":"59a62275088b00b7241e6ff4136434c7","access_level":"open_access","file_name":"2020_Urban_Bezeljak_Thesis.pdf","file_id":"8343","creator":"dernst","date_created":"2020-09-08T09:00:27Z"}]},{"file":[{"file_size":1002818,"content_type":"application/pdf","date_updated":"2020-09-18T13:02:37Z","checksum":"88f92544889eb18bb38e25629a422a86","relation":"main_file","access_level":"open_access","success":1,"file_name":"2020_NatureComm_Arnold.pdf","file_id":"8530","date_created":"2020-09-18T13:02:37Z","creator":"dernst"}],"citation":{"ama":"Arnold GM, Wulf M, Barzanjeh S, et al. Converting microwave and telecom photons with a silicon photonic nanomechanical interface. <i>Nature Communications</i>. 2020;11. doi:<a href=\"https://doi.org/10.1038/s41467-020-18269-z\">10.1038/s41467-020-18269-z</a>","chicago":"Arnold, Georg M, Matthias Wulf, Shabir Barzanjeh, Elena Redchenko, Alfredo R Rueda Sanchez, William J Hease, Farid Hassani, and Johannes M Fink. “Converting Microwave and Telecom Photons with a Silicon Photonic Nanomechanical Interface.” <i>Nature Communications</i>. Springer Nature, 2020. <a href=\"https://doi.org/10.1038/s41467-020-18269-z\">https://doi.org/10.1038/s41467-020-18269-z</a>.","ista":"Arnold GM, Wulf M, Barzanjeh S, Redchenko E, Rueda Sanchez AR, Hease WJ, Hassani F, Fink JM. 2020. Converting microwave and telecom photons with a silicon photonic nanomechanical interface. Nature Communications. 11, 4460.","mla":"Arnold, Georg M., et al. “Converting Microwave and Telecom Photons with a Silicon Photonic Nanomechanical Interface.” <i>Nature Communications</i>, vol. 11, 4460, Springer Nature, 2020, doi:<a href=\"https://doi.org/10.1038/s41467-020-18269-z\">10.1038/s41467-020-18269-z</a>.","apa":"Arnold, G. M., Wulf, M., Barzanjeh, S., Redchenko, E., Rueda Sanchez, A. R., Hease, W. J., … Fink, J. M. (2020). Converting microwave and telecom photons with a silicon photonic nanomechanical interface. <i>Nature Communications</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41467-020-18269-z\">https://doi.org/10.1038/s41467-020-18269-z</a>","short":"G.M. Arnold, M. Wulf, S. Barzanjeh, E. Redchenko, A.R. Rueda Sanchez, W.J. Hease, F. Hassani, J.M. Fink, Nature Communications 11 (2020).","ieee":"G. M. Arnold <i>et al.</i>, “Converting microwave and telecom photons with a silicon photonic nanomechanical interface,” <i>Nature Communications</i>, vol. 11. Springer Nature, 2020."},"type":"journal_article","ddc":["530"],"acknowledged_ssus":[{"_id":"NanoFab"}],"article_type":"original","abstract":[{"lang":"eng","text":"Practical quantum networks require low-loss and noise-resilient optical interconnects as well as non-Gaussian resources for entanglement distillation and distributed quantum computation. The latter could be provided by superconducting circuits but existing solutions to interface the microwave and optical domains lack either scalability or efficiency, and in most cases the conversion noise is not known. In this work we utilize the unique opportunities of silicon photonics, cavity optomechanics and superconducting circuits to demonstrate a fully integrated, coherent transducer interfacing the microwave X and the telecom S bands with a total (internal) bidirectional transduction efficiency of 1.2% (135%) at millikelvin temperatures. The coupling relies solely on the radiation pressure interaction mediated by the femtometer-scale motion of two silicon nanobeams reaching a <jats:italic>V</jats:italic><jats:sub><jats:italic>π</jats:italic></jats:sub> as low as 16 μV for sub-nanowatt pump powers. Without the associated optomechanical gain, we achieve a total (internal) pure conversion efficiency of up to 0.019% (1.6%), relevant for future noise-free operation on this qubit-compatible platform."}],"publication_status":"published","has_accepted_license":"1","status":"public","language":[{"iso":"eng"}],"quality_controlled":"1","doi":"10.1038/s41467-020-18269-z","oa_version":"Published Version","publisher":"Springer Nature","day":"08","publication_identifier":{"issn":["2041-1723"]},"department":[{"_id":"JoFi"}],"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"year":"2020","author":[{"full_name":"Arnold, Georg M","orcid":"0000-0003-1397-7876","last_name":"Arnold","first_name":"Georg M","id":"3770C838-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Matthias","id":"45598606-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6613-1378","full_name":"Wulf, Matthias","last_name":"Wulf"},{"orcid":"0000-0003-0415-1423","full_name":"Barzanjeh, Shabir","last_name":"Barzanjeh","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","first_name":"Shabir"},{"full_name":"Redchenko, Elena","last_name":"Redchenko","first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Alfredo R","id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6249-5860","full_name":"Rueda Sanchez, Alfredo R","last_name":"Rueda Sanchez"},{"first_name":"William J","id":"29705398-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9868-2166","full_name":"Hease, William J","last_name":"Hease"},{"first_name":"Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","full_name":"Hassani, Farid","orcid":"0000-0001-6937-5773","last_name":"Hassani"},{"last_name":"Fink","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","first_name":"Johannes M"}],"isi":1,"related_material":{"link":[{"relation":"erratum","url":"https://doi.org/10.1038/s41467-020-18912-9"},{"relation":"press_release","description":"News on IST Homepage","url":"https://ist.ac.at/en/news/how-to-transport-microwave-quantum-information-via-optical-fiber/"}],"record":[{"id":"13056","status":"public","relation":"research_data"}]},"volume":11,"article_number":"4460","intvolume":"        11","oa":1,"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","acknowledgement":"We thank Yuan Chen for performing supplementary FEM simulations and Andrew Higginbotham, Ralf Riedinger, Sungkun Hong, and Lorenzo Magrini for valuable discussions. This work was supported by IST Austria, the IST nanofabrication facility (NFF), the European Union’s Horizon 2020 research and innovation program under grant agreement no. 732894 (FET Proactive HOT) and the European Research Council under grant agreement no. 758053 (ERC StG QUNNECT). G.A. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria. W.H. is the recipient of an ISTplus postdoctoral fellowship with funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement no. 754411. J.M.F. acknowledges support from the Austrian Science Fund (FWF) through BeyondC (F71), a NOMIS foundation research grant, and the EU’s Horizon 2020 research and innovation program under grant agreement no. 862644 (FET Open QUARTET).","publication":"Nature Communications","file_date_updated":"2020-09-18T13:02:37Z","project":[{"call_identifier":"H2020","grant_number":"732894","_id":"257EB838-B435-11E9-9278-68D0E5697425","name":"Hybrid Optomechanical Technologies"},{"name":"A Fiber Optic Transceiver for Superconducting Qubits","grant_number":"758053","_id":"26336814-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"},{"name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","call_identifier":"H2020"},{"name":"Quantum readout techniques and technologies","call_identifier":"H2020","grant_number":"862644","_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E"},{"name":"Coherent on-chip conversion of superconducting qubit signals from microwaves to optical frequencies","_id":"2671EB66-B435-11E9-9278-68D0E5697425"}],"_id":"8529","external_id":{"isi":["000577280200001"]},"date_created":"2020-09-18T10:56:20Z","title":"Converting microwave and telecom photons with a silicon photonic nanomechanical interface","date_updated":"2024-08-07T07:11:51Z","month":"09","keyword":["General Biochemistry","Genetics and Molecular Biology","General Physics and Astronomy","General Chemistry"],"article_processing_charge":"No","date_published":"2020-09-08T00:00:00Z","ec_funded":1},{"publication":"Physical Review Applied","file_date_updated":"2021-03-29T11:43:20Z","_id":"8755","project":[{"name":"Integrating superconducting quantum circuits","_id":"26927A52-B435-11E9-9278-68D0E5697425","grant_number":"F07105","call_identifier":"FWF"},{"name":"Hybrid Optomechanical Technologies","call_identifier":"H2020","grant_number":"732894","_id":"257EB838-B435-11E9-9278-68D0E5697425"},{"grant_number":"862644","_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E","call_identifier":"H2020","name":"Quantum readout techniques and technologies"},{"name":"A Fiber Optic Transceiver for Superconducting Qubits","grant_number":"758053","_id":"26336814-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"}],"external_id":{"arxiv":["2007.01644"],"isi":["000582797300003"]},"date_created":"2020-11-15T23:01:17Z","date_updated":"2024-08-07T07:11:55Z","title":"Surpassing the resistance quantum with a geometric superinductor","month":"10","article_processing_charge":"No","date_published":"2020-10-29T00:00:00Z","ec_funded":1,"scopus_import":"1","related_material":{"record":[{"id":"13070","status":"public","relation":"research_data"},{"status":"public","relation":"dissertation_contains","id":"9920"}]},"volume":14,"article_number":"044055","oa":1,"intvolume":"        14","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","issue":"4","acknowledgement":"The authors acknowledge the support from I. Prieto and the IST Nanofabrication Facility. This work was supported by IST Austria and a NOMIS foundation research grant and the Austrian Science Fund (FWF) through BeyondC (F71). MP is the recipient of a P¨ottinger scholarship at IST Austria. JMF acknowledges support from the European Union’s Horizon 2020 research and innovation programs under grant agreement No 732894 (FET Proactive HOT), 862644 (FET Open QUARTET), and the European Research Council under grant agreement\r\nnumber 758053 (ERC StG QUNNECT). ","doi":"10.1103/PhysRevApplied.14.044055","arxiv":1,"oa_version":"Published Version","publisher":"American Physical Society","day":"29","publication_identifier":{"eissn":["23317019"]},"department":[{"_id":"JoFi"}],"year":"2020","isi":1,"author":[{"first_name":"Matilda","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","last_name":"Peruzzo","full_name":"Peruzzo, Matilda","orcid":"0000-0002-3415-4628"},{"last_name":"Trioni","full_name":"Trioni, Andrea","first_name":"Andrea","id":"42F71B44-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Hassani","orcid":"0000-0001-6937-5773","full_name":"Hassani, Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","first_name":"Farid"},{"full_name":"Zemlicka, Martin","last_name":"Zemlicka","first_name":"Martin","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","last_name":"Fink","first_name":"Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"file":[{"file_name":"2020_PhysReviewApplied_Peruzzo.pdf","access_level":"open_access","success":1,"checksum":"2a634abe75251ae7628cd54c8a4ce2e8","relation":"main_file","file_size":2607823,"content_type":"application/pdf","date_updated":"2021-03-29T11:43:20Z","date_created":"2021-03-29T11:43:20Z","creator":"dernst","file_id":"9300"}],"type":"journal_article","citation":{"mla":"Peruzzo, Matilda, et al. “Surpassing the Resistance Quantum with a Geometric Superinductor.” <i>Physical Review Applied</i>, vol. 14, no. 4, 044055, American Physical Society, 2020, doi:<a href=\"https://doi.org/10.1103/PhysRevApplied.14.044055\">10.1103/PhysRevApplied.14.044055</a>.","ista":"Peruzzo M, Trioni A, Hassani F, Zemlicka M, Fink JM. 2020. Surpassing the resistance quantum with a geometric superinductor. Physical Review Applied. 14(4), 044055.","chicago":"Peruzzo, Matilda, Andrea Trioni, Farid Hassani, Martin Zemlicka, and Johannes M Fink. “Surpassing the Resistance Quantum with a Geometric Superinductor.” <i>Physical Review Applied</i>. American Physical Society, 2020. <a href=\"https://doi.org/10.1103/PhysRevApplied.14.044055\">https://doi.org/10.1103/PhysRevApplied.14.044055</a>.","ama":"Peruzzo M, Trioni A, Hassani F, Zemlicka M, Fink JM. Surpassing the resistance quantum with a geometric superinductor. <i>Physical Review Applied</i>. 2020;14(4). doi:<a href=\"https://doi.org/10.1103/PhysRevApplied.14.044055\">10.1103/PhysRevApplied.14.044055</a>","ieee":"M. Peruzzo, A. Trioni, F. Hassani, M. Zemlicka, and J. M. Fink, “Surpassing the resistance quantum with a geometric superinductor,” <i>Physical Review Applied</i>, vol. 14, no. 4. American Physical Society, 2020.","apa":"Peruzzo, M., Trioni, A., Hassani, F., Zemlicka, M., &#38; Fink, J. M. (2020). Surpassing the resistance quantum with a geometric superinductor. <i>Physical Review Applied</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevApplied.14.044055\">https://doi.org/10.1103/PhysRevApplied.14.044055</a>","short":"M. Peruzzo, A. Trioni, F. Hassani, M. Zemlicka, J.M. Fink, Physical Review Applied 14 (2020)."},"acknowledged_ssus":[{"_id":"NanoFab"}],"ddc":["530"],"article_type":"original","abstract":[{"lang":"eng","text":"The superconducting circuit community has recently discovered the promising potential of superinductors. These circuit elements have a characteristic impedance exceeding the resistance quantum RQ ≈ 6.45 kΩ which leads to a suppression of ground state charge fluctuations. Applications include the realization of hardware protected qubits for fault tolerant quantum computing, improved coupling to small dipole moment objects and defining a new quantum metrology standard for the ampere. In this work we refute the widespread notion that superinductors can only be implemented based on kinetic inductance, i.e. using disordered superconductors or Josephson junction arrays. We present modeling, fabrication and characterization of 104 planar aluminum coil resonators with a characteristic impedance up to 30.9 kΩ at 5.6 GHz and a capacitance down to ≤ 1 fF, with lowloss and a power handling reaching 108 intra-cavity photons. Geometric superinductors are free of uncontrolled tunneling events and offer high reproducibility, linearity and the ability to couple magnetically - properties that significantly broaden the scope of future quantum circuits. "}],"publication_status":"published","status":"public","has_accepted_license":"1","language":[{"iso":"eng"}],"quality_controlled":"1"},{"oa":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","acknowledgement":"This research and related results were made possible with the support of the NOMIS Foundation. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility, the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement #844511 and the Grant Agreement #862046. ICN2 acknowledge funding from Generalitat de Catalunya 2017 SGR 327. ICN2 is supported by the Severo Ochoa\r\nprogram from Spanish MINECO (Grant No. SEV2017-0706) and is funded by the CERCA Programme / Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Aut`onoma de Barcelona Materials Science PhD program. The HAADF-STEM microscopy was conducted in the Laboratorio de Microscopias Avanzadas at Instituto de Nanociencia de Aragon-Universidad de Zaragoza. Authors acknowledge the LMA-INA for offering access to their instruments and expertise. We acknowledge support from CSIC Research Platform on Quantum Technologies PTI-001. This project has received funding from\r\nthe European Union’s Horizon 2020 research and innovation programme under grant agreement No 823717 – ESTEEM3. M.B. acknowledges support from SUR Generalitat de Catalunya and the EU Social Fund; project ref. 2020 FI 00103. GS and MV acknowledge support through a projectruimte grant associated with the Netherlands Organization of Scientific Research (NWO).","article_number":"2012.00322","related_material":{"record":[{"relation":"later_version","status":"public","id":"10559"},{"relation":"research_data","status":"public","id":"8834"},{"relation":"dissertation_contains","status":"public","id":"10058"}]},"ec_funded":1,"article_processing_charge":"No","date_published":"2020-12-02T00:00:00Z","month":"12","date_updated":"2024-03-25T23:30:14Z","title":"Enhancement of proximity induced superconductivity in planar Germanium","external_id":{"arxiv":["2012.00322"]},"date_created":"2020-12-02T10:42:53Z","project":[{"name":"Hybrid Semiconductor - Superconductor Quantum Devices","_id":"262116AA-B435-11E9-9278-68D0E5697425"},{"name":"Majorana bound states in Ge/SiGe heterostructures","call_identifier":"H2020","_id":"26A151DA-B435-11E9-9278-68D0E5697425","grant_number":"844511"},{"name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS","grant_number":"862046","_id":"237E5020-32DE-11EA-91FC-C7463DDC885E","call_identifier":"H2020"}],"_id":"8831","publication":"arXiv","file_date_updated":"2020-12-02T10:42:31Z","has_accepted_license":"1","status":"public","language":[{"iso":"eng"}],"publication_status":"submitted","abstract":[{"lang":"eng","text":"Holes in planar Ge have high mobilities, strong spin-orbit interaction and electrically tunable g-factors, and are therefore emerging as a promising candidate for hybrid superconductorsemiconductor devices. This is further motivated by the observation of supercurrent transport in planar Ge Josephson Field effect transistors (JoFETs). A key challenge towards hybrid germanium quantum technology is the design of high quality interfaces and superconducting contacts that are robust against magnetic fields. By combining the assets of Al, which has a long superconducting coherence, and Nb, which has a significant superconducting gap, we form low-disordered JoFETs with large ICRN products that are capable of withstanding high magnetic fields. We furthermore demonstrate the ability of phase-biasing individual JoFETs opening up an avenue to explore topological superconductivity in planar Ge. The persistence of superconductivity in the reported hybrid devices beyond 1.8 T paves the way towards integrating spin qubits and proximity-induced superconductivity on the same chip."}],"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"ddc":["530"],"citation":{"apa":"Aggarwal, K., Hofmann, A. C., Jirovec, D., Prieto Gonzalez, I., Sammak, A., Botifoll, M., … Katsaros, G. (n.d.). Enhancement of proximity induced superconductivity in planar Germanium. <i>arXiv</i>.","short":"K. Aggarwal, A.C. Hofmann, D. Jirovec, I. Prieto Gonzalez, A. Sammak, M. Botifoll, S. Marti-Sanchez, M. Veldhorst, J. Arbiol, G. Scappucci, G. Katsaros, ArXiv (n.d.).","ieee":"K. Aggarwal <i>et al.</i>, “Enhancement of proximity induced superconductivity in planar Germanium,” <i>arXiv</i>. .","ama":"Aggarwal K, Hofmann AC, Jirovec D, et al. Enhancement of proximity induced superconductivity in planar Germanium. <i>arXiv</i>.","chicago":"Aggarwal, Kushagra, Andrea C Hofmann, Daniel Jirovec, Ivan Prieto Gonzalez, Amir Sammak, Marc Botifoll, Sara Marti-Sanchez, et al. “Enhancement of Proximity Induced Superconductivity in Planar Germanium.” <i>ArXiv</i>, n.d.","ista":"Aggarwal K, Hofmann AC, Jirovec D, Prieto Gonzalez I, Sammak A, Botifoll M, Marti-Sanchez S, Veldhorst M, Arbiol J, Scappucci G, Katsaros G. Enhancement of proximity induced superconductivity in planar Germanium. arXiv, 2012.00322.","mla":"Aggarwal, Kushagra, et al. “Enhancement of Proximity Induced Superconductivity in Planar Germanium.” <i>ArXiv</i>, 2012.00322."},"type":"preprint","file":[{"date_created":"2020-12-02T10:42:31Z","creator":"gkatsaro","file_id":"8832","file_name":"Superconducting_2D_Ge.pdf","access_level":"open_access","checksum":"22a612e206232fa94b138b2c2f957582","relation":"main_file","content_type":"application/pdf","date_updated":"2020-12-02T10:42:31Z","file_size":1697939}],"year":"2020","author":[{"last_name":"Aggarwal","orcid":"0000-0001-9985-9293","full_name":"Aggarwal, Kushagra","first_name":"Kushagra","id":"b22ab905-3539-11eb-84c3-fc159dcd79cb"},{"full_name":"Hofmann, Andrea C","last_name":"Hofmann","id":"340F461A-F248-11E8-B48F-1D18A9856A87","first_name":"Andrea C"},{"first_name":"Daniel","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-7197-4801","full_name":"Jirovec, Daniel","last_name":"Jirovec"},{"id":"2A307FE2-F248-11E8-B48F-1D18A9856A87","first_name":"Ivan","last_name":"Prieto Gonzalez","full_name":"Prieto Gonzalez, Ivan","orcid":"0000-0002-7370-5357"},{"last_name":"Sammak","full_name":"Sammak, Amir","first_name":"Amir"},{"first_name":"Marc","last_name":"Botifoll","full_name":"Botifoll, Marc"},{"first_name":"Sara","full_name":"Marti-Sanchez, Sara","last_name":"Marti-Sanchez"},{"first_name":"Menno","last_name":"Veldhorst","full_name":"Veldhorst, Menno"},{"last_name":"Arbiol","full_name":"Arbiol, Jordi","first_name":"Jordi"},{"first_name":"Giordano","last_name":"Scappucci","full_name":"Scappucci, Giordano"},{"last_name":"Katsaros","orcid":"0000-0001-8342-202X","full_name":"Katsaros, Georgios","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","first_name":"Georgios"}],"department":[{"_id":"GeKa"}],"day":"02","arxiv":1,"oa_version":"Submitted Version"}]