[{"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2206.14104"}],"scopus_import":"1","intvolume":"        20","citation":{"short":"M. Zemlicka, E. Redchenko, M. Peruzzo, F. Hassani, A. Trioni, S. Barzanjeh, J.M. Fink, Physical Review Applied 20 (2023).","ieee":"M. Zemlicka <i>et al.</i>, “Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses,” <i>Physical Review Applied</i>, vol. 20, no. 4. American Physical Society, 2023.","ama":"Zemlicka M, Redchenko E, Peruzzo M, et al. Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses. <i>Physical Review Applied</i>. 2023;20(4). doi:<a href=\"https://doi.org/10.1103/PhysRevApplied.20.044054\">10.1103/PhysRevApplied.20.044054</a>","chicago":"Zemlicka, Martin, Elena Redchenko, Matilda Peruzzo, Farid Hassani, Andrea Trioni, Shabir Barzanjeh, and Johannes M Fink. “Compact Vacuum-Gap Transmon Qubits: Selective and Sensitive Probes for Superconductor Surface Losses.” <i>Physical Review Applied</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/PhysRevApplied.20.044054\">https://doi.org/10.1103/PhysRevApplied.20.044054</a>.","ista":"Zemlicka M, Redchenko E, Peruzzo M, Hassani F, Trioni A, Barzanjeh S, Fink JM. 2023. Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses. Physical Review Applied. 20(4), 044054.","apa":"Zemlicka, M., Redchenko, E., Peruzzo, M., Hassani, F., Trioni, A., Barzanjeh, S., &#38; Fink, J. M. (2023). Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses. <i>Physical Review Applied</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevApplied.20.044054\">https://doi.org/10.1103/PhysRevApplied.20.044054</a>","mla":"Zemlicka, Martin, et al. “Compact Vacuum-Gap Transmon Qubits: Selective and Sensitive Probes for Superconductor Surface Losses.” <i>Physical Review Applied</i>, vol. 20, no. 4, 044054, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/PhysRevApplied.20.044054\">10.1103/PhysRevApplied.20.044054</a>."},"doi":"10.1103/PhysRevApplied.20.044054","publication_status":"published","date_published":"2023-10-20T00:00:00Z","oa_version":"Preprint","publication_identifier":{"eissn":["2331-7019"]},"oa":1,"status":"public","ec_funded":1,"month":"10","year":"2023","arxiv":1,"abstract":[{"text":"State-of-the-art transmon qubits rely on large capacitors, which systematically improve their coherence due to reduced surface-loss participation. However, this approach increases both the footprint and the parasitic cross-coupling and is ultimately limited by radiation losses—a potential roadblock for scaling up quantum processors to millions of qubits. In this work we present transmon qubits with sizes as low as 36 × 39 µm2 with  100-nm-wide vacuum-gap capacitors that are micromachined from commercial silicon-on-insulator wafers and shadow evaporated with aluminum. We achieve a vacuum participation ratio up to 99.6% in an in-plane design that is compatible with standard coplanar circuits. Qubit relaxationtime measurements for small gaps with high zero-point electric field variance of up to 22 V/m reveal a double exponential decay indicating comparably strong qubit interaction with long-lived two-level systems. The exceptionally high selectivity of up to 20 dB to the superconductor-vacuum interface allows us to precisely back out the sub-single-photon dielectric loss tangent of aluminum oxide previously exposed to ambient conditions. In terms of future scaling potential, we achieve a ratio of qubit quality factor to a footprint area equal to 20 µm−2, which is comparable with the highest T1 devices relying on larger geometries, a value that could improve substantially for lower surface-loss superconductors. ","lang":"eng"}],"issue":"4","date_updated":"2024-08-07T07:11:55Z","_id":"14517","acknowledged_ssus":[{"_id":"NanoFab"}],"article_number":"044054","article_processing_charge":"No","article_type":"original","related_material":{"record":[{"status":"public","relation":"research_data","id":"14520"}]},"volume":20,"quality_controlled":"1","external_id":{"arxiv":["2206.14104"]},"publication":"Physical Review Applied","date_created":"2023-11-12T23:00:55Z","department":[{"_id":"JoFi"}],"language":[{"iso":"eng"}],"type":"journal_article","title":"Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"American Physical Society","day":"20","acknowledgement":"This work was supported by the Austrian Science Fund (FWF) through BeyondC (F7105), the European Research Council under Grant Agreement No. 758053 (ERC StG QUNNECT) and a NOMIS foundation research grant. M.Z. was the recipient of a SAIA scholarship, E.R. of\r\na DOC fellowship of the Austrian Academy of Sciences, and M.P. of a Pöttinger scholarship at IST Austria. S.B. acknowledges support from Marie Skłodowska Curie Program No. 707438 (MSC-IF SUPEREOM). J.M.F. acknowledges support from the Horizon Europe Program HORIZON-CL4-2022-QUANTUM-01-SGA via Project No. 101113946 OpenSuperQPlus100 and the ISTA Nanofabrication Facility.","author":[{"last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","first_name":"Martin","full_name":"Zemlicka, Martin"},{"full_name":"Redchenko, Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko","first_name":"Elena"},{"full_name":"Peruzzo, Matilda","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","last_name":"Peruzzo","orcid":"0000-0002-3415-4628","first_name":"Matilda"},{"first_name":"Farid","orcid":"0000-0001-6937-5773","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","full_name":"Hassani, Farid"},{"full_name":"Trioni, Andrea","first_name":"Andrea","last_name":"Trioni","id":"42F71B44-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Barzanjeh","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","first_name":"Shabir","orcid":"0000-0003-0415-1423","full_name":"Barzanjeh, Shabir"},{"full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"project":[{"name":"Integrating superconducting quantum circuits","call_identifier":"FWF","_id":"26927A52-B435-11E9-9278-68D0E5697425","grant_number":"F07105"},{"call_identifier":"H2020","name":"A Fiber Optic Transceiver for Superconducting Qubits","_id":"26336814-B435-11E9-9278-68D0E5697425","grant_number":"758053"},{"name":"Protected states of quantum matter","_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2"},{"grant_number":"707438","_id":"258047B6-B435-11E9-9278-68D0E5697425","name":"Microwave-to-Optical Quantum Link: Quantum Teleportation and Quantum Illumination with cavity Optomechanics SUPEREOM","call_identifier":"H2020"},{"name":"Open Superconducting Quantum Computers (OpenSuperQPlus)","grant_number":"101080139","_id":"bdb7cfc1-d553-11ed-ba76-d2eaab167738"}]},{"scopus_import":"1","file_date_updated":"2023-06-06T07:31:20Z","ddc":["530"],"intvolume":"        14","citation":{"apa":"Redchenko, E., Poshakinskiy, A. V., Sett, R., Zemlicka, M., Poddubny, A. N., &#38; Fink, J. M. (2023). Tunable directional photon scattering from a pair of superconducting qubits. <i>Nature Communications</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41467-023-38761-6\">https://doi.org/10.1038/s41467-023-38761-6</a>","mla":"Redchenko, Elena, et al. “Tunable Directional Photon Scattering from a Pair of Superconducting Qubits.” <i>Nature Communications</i>, vol. 14, 2998, Springer Nature, 2023, doi:<a href=\"https://doi.org/10.1038/s41467-023-38761-6\">10.1038/s41467-023-38761-6</a>.","ista":"Redchenko E, Poshakinskiy AV, Sett R, Zemlicka M, Poddubny AN, Fink JM. 2023. Tunable directional photon scattering from a pair of superconducting qubits. Nature Communications. 14, 2998.","chicago":"Redchenko, Elena, Alexander V. Poshakinskiy, Riya Sett, Martin Zemlicka, Alexander N. Poddubny, and Johannes M Fink. “Tunable Directional Photon Scattering from a Pair of Superconducting Qubits.” <i>Nature Communications</i>. Springer Nature, 2023. <a href=\"https://doi.org/10.1038/s41467-023-38761-6\">https://doi.org/10.1038/s41467-023-38761-6</a>.","ieee":"E. Redchenko, A. V. Poshakinskiy, R. Sett, M. Zemlicka, A. N. Poddubny, and J. M. Fink, “Tunable directional photon scattering from a pair of superconducting qubits,” <i>Nature Communications</i>, vol. 14. Springer Nature, 2023.","ama":"Redchenko E, Poshakinskiy AV, Sett R, Zemlicka M, Poddubny AN, Fink JM. Tunable directional photon scattering from a pair of superconducting qubits. <i>Nature Communications</i>. 2023;14. doi:<a href=\"https://doi.org/10.1038/s41467-023-38761-6\">10.1038/s41467-023-38761-6</a>","short":"E. Redchenko, A.V. Poshakinskiy, R. Sett, M. Zemlicka, A.N. Poddubny, J.M. Fink, Nature Communications 14 (2023)."},"doi":"10.1038/s41467-023-38761-6","publication_status":"published","oa_version":"Published Version","date_published":"2023-05-24T00:00:00Z","status":"public","publication_identifier":{"eissn":["2041-1723"]},"oa":1,"month":"05","ec_funded":1,"arxiv":1,"abstract":[{"text":"The ability to control the direction of scattered light is crucial to provide flexibility and scalability for a wide range of on-chip applications, such as integrated photonics, quantum information processing, and nonlinear optics. Tunable directionality can be achieved by applying external magnetic fields that modify optical selection rules, by using nonlinear effects, or interactions with vibrations. However, these approaches are less suitable to control microwave photon propagation inside integrated superconducting quantum devices. Here, we demonstrate on-demand tunable directional scattering based on two periodically modulated transmon qubits coupled to a transmission line at a fixed distance. By changing the relative phase between the modulation tones, we realize unidirectional forward or backward photon scattering. Such an in-situ switchable mirror represents a versatile tool for intra- and inter-chip microwave photonic processors. In the future, a lattice of qubits can be used to realize topological circuits that exhibit strong nonreciprocity or chirality.","lang":"eng"}],"date_updated":"2024-08-07T07:11:50Z","year":"2023","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"article_number":"2998","_id":"13117","article_processing_charge":"No","article_type":"original","quality_controlled":"1","volume":14,"external_id":{"isi":["001001099700002"],"arxiv":["2205.03293"]},"related_material":{"record":[{"status":"public","relation":"research_data","id":"13124"}]},"has_accepted_license":"1","publication":"Nature Communications","date_created":"2023-06-04T22:01:02Z","type":"journal_article","department":[{"_id":"JoFi"}],"language":[{"iso":"eng"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","publisher":"Springer Nature","title":"Tunable directional photon scattering from a pair of superconducting qubits","acknowledgement":"The authors thank W.D. Oliver for discussions, L. Drmic and P. Zielinski for software development, and the MIBA workshop and the IST nanofabrication facility for technical support. This work was supported by the Austrian Science Fund (FWF) through BeyondC (F7105) and IST Austria. E.R. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria. J.M.F. and M.Z. acknowledge support from the European Research Council under grant agreement No 758053 (ERC StG QUNNECT) and a NOMIS foundation research grant. The work of A.N.P. and A.V.P. has been supported by the Russian Science Foundation under the grant No 20-12-00194.","day":"24","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"author":[{"first_name":"Elena","last_name":"Redchenko","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","full_name":"Redchenko, Elena"},{"last_name":"Poshakinskiy","first_name":"Alexander V.","full_name":"Poshakinskiy, Alexander V."},{"id":"2E6D040E-F248-11E8-B48F-1D18A9856A87","last_name":"Sett","first_name":"Riya","full_name":"Sett, Riya"},{"first_name":"Martin","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka","full_name":"Zemlicka, Martin"},{"first_name":"Alexander N.","last_name":"Poddubny","full_name":"Poddubny, Alexander N."},{"full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"isi":1,"project":[{"call_identifier":"FWF","name":"Integrating superconducting quantum circuits","grant_number":"F07105","_id":"26927A52-B435-11E9-9278-68D0E5697425"},{"_id":"26336814-B435-11E9-9278-68D0E5697425","grant_number":"758053","call_identifier":"H2020","name":"A Fiber Optic Transceiver for Superconducting Qubits"},{"_id":"26B354CA-B435-11E9-9278-68D0E5697425","name":"Controllable Collective States of Superconducting Qubit Ensembles"},{"_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2","name":"Protected states of quantum matter"}],"file":[{"file_size":1654389,"success":1,"content_type":"application/pdf","relation":"main_file","date_created":"2023-06-06T07:31:20Z","file_name":"2023_NaturePhysics_Redchenko.pdf","date_updated":"2023-06-06T07:31:20Z","access_level":"open_access","file_id":"13123","checksum":"a857df40f0882859c48a1ff1e2001ec2","creator":"dernst"}]},{"related_material":{"record":[{"id":"13117","status":"public","relation":"used_in_publication"}]},"citation":{"short":"E. Redchenko, A. Poshakinskiy, R. Sett, M. Zemlicka, A. Poddubny, J.M. Fink, (2023).","ama":"Redchenko E, Poshakinskiy A, Sett R, Zemlicka M, Poddubny A, Fink JM. Tunable directional photon scattering from a pair of superconducting qubits. 2023. doi:<a href=\"https://doi.org/10.5281/ZENODO.7858567\">10.5281/ZENODO.7858567</a>","ieee":"E. Redchenko, A. Poshakinskiy, R. Sett, M. Zemlicka, A. Poddubny, and J. M. Fink, “Tunable directional photon scattering from a pair of superconducting qubits.” Zenodo, 2023.","chicago":"Redchenko, Elena, Alexander Poshakinskiy, Riya Sett, Martin Zemlicka, Alexander Poddubny, and Johannes M Fink. “Tunable Directional Photon Scattering from a Pair of Superconducting Qubits.” Zenodo, 2023. <a href=\"https://doi.org/10.5281/ZENODO.7858567\">https://doi.org/10.5281/ZENODO.7858567</a>.","apa":"Redchenko, E., Poshakinskiy, A., Sett, R., Zemlicka, M., Poddubny, A., &#38; Fink, J. M. (2023). Tunable directional photon scattering from a pair of superconducting qubits. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.7858567\">https://doi.org/10.5281/ZENODO.7858567</a>","ista":"Redchenko E, Poshakinskiy A, Sett R, Zemlicka M, Poddubny A, Fink JM. 2023. Tunable directional photon scattering from a pair of superconducting qubits, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.7858567\">10.5281/ZENODO.7858567</a>.","mla":"Redchenko, Elena, et al. <i>Tunable Directional Photon Scattering from a Pair of Superconducting Qubits</i>. Zenodo, 2023, doi:<a href=\"https://doi.org/10.5281/ZENODO.7858567\">10.5281/ZENODO.7858567</a>."},"ddc":["530"],"main_file_link":[{"url":"https://doi.org/10.5281/zenodo.7858567","open_access":"1"}],"article_processing_charge":"No","department":[{"_id":"JoFi"}],"date_published":"2023-04-28T00:00:00Z","oa_version":"Published Version","type":"research_data_reference","date_created":"2023-06-06T07:36:50Z","doi":"10.5281/ZENODO.7858567","month":"04","title":"Tunable directional photon scattering from a pair of superconducting qubits","oa":1,"publisher":"Zenodo","status":"public","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"13124","author":[{"full_name":"Redchenko, Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko","first_name":"Elena"},{"full_name":"Poshakinskiy, Alexander","last_name":"Poshakinskiy","first_name":"Alexander"},{"first_name":"Riya","id":"2E6D040E-F248-11E8-B48F-1D18A9856A87","last_name":"Sett","full_name":"Sett, Riya"},{"last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","first_name":"Martin","full_name":"Zemlicka, Martin"},{"full_name":"Poddubny, Alexander","last_name":"Poddubny","first_name":"Alexander"},{"full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","first_name":"Johannes M","orcid":"0000-0001-8112-028X"}],"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"day":"28","year":"2023","date_updated":"2024-09-10T12:23:51Z","abstract":[{"text":"This dataset comprises all data shown in the figures of the submitted article \"Tunable directional photon scattering from a pair of superconducting qubits\" at arXiv:2205.03293. Additional raw data are available from the corresponding author on reasonable request.","lang":"eng"}]},{"author":[{"first_name":"Martin","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka","full_name":"Zemlicka, Martin"},{"full_name":"Redchenko, Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko","first_name":"Elena"},{"full_name":"Peruzzo, Matilda","first_name":"Matilda","orcid":"0000-0002-3415-4628","last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Hassani, Farid","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","first_name":"Farid","orcid":"0000-0001-6937-5773"},{"full_name":"Trioni, Andrea","last_name":"Trioni","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","first_name":"Andrea"},{"id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","last_name":"Barzanjeh","first_name":"Shabir","orcid":"0000-0003-0415-1423","full_name":"Barzanjeh, Shabir"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M"}],"_id":"14520","date_updated":"2024-09-10T12:23:57Z","abstract":[{"lang":"eng","text":"This dataset comprises all data shown in the figures of the submitted article \"Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses\" at arxiv.org/abs/2206.14104. Additional raw data are available from the corresponding author on reasonable request."}],"day":"28","tmp":{"name":"Creative Commons Public Domain Dedication (CC0 1.0)","legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","short":"CC0 (1.0)","image":"/images/cc_0.png"},"year":"2022","month":"06","status":"public","publisher":"Zenodo","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses","oa":1,"oa_version":"Published Version","type":"research_data_reference","date_published":"2022-06-28T00:00:00Z","department":[{"_id":"JoFi"}],"has_accepted_license":"1","doi":"10.5281/ZENODO.8408897","date_created":"2023-11-13T08:09:10Z","citation":{"short":"M. Zemlicka, E. Redchenko, M. Peruzzo, F. Hassani, A. Trioni, S. Barzanjeh, J.M. Fink, (2022).","ieee":"M. Zemlicka <i>et al.</i>, “Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses.” Zenodo, 2022.","ama":"Zemlicka M, Redchenko E, Peruzzo M, et al. Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses. 2022. doi:<a href=\"https://doi.org/10.5281/ZENODO.8408897\">10.5281/ZENODO.8408897</a>","chicago":"Zemlicka, Martin, Elena Redchenko, Matilda Peruzzo, Farid Hassani, Andrea Trioni, Shabir Barzanjeh, and Johannes M Fink. “Compact Vacuum Gap Transmon Qubits: Selective and Sensitive Probes for Superconductor Surface Losses.” Zenodo, 2022. <a href=\"https://doi.org/10.5281/ZENODO.8408897\">https://doi.org/10.5281/ZENODO.8408897</a>.","ista":"Zemlicka M, Redchenko E, Peruzzo M, Hassani F, Trioni A, Barzanjeh S, Fink JM. 2022. Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.8408897\">10.5281/ZENODO.8408897</a>.","apa":"Zemlicka, M., Redchenko, E., Peruzzo, M., Hassani, F., Trioni, A., Barzanjeh, S., &#38; Fink, J. M. (2022). Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.8408897\">https://doi.org/10.5281/ZENODO.8408897</a>","mla":"Zemlicka, Martin, et al. <i>Compact Vacuum Gap Transmon Qubits: Selective and Sensitive Probes for Superconductor Surface Losses</i>. Zenodo, 2022, doi:<a href=\"https://doi.org/10.5281/ZENODO.8408897\">10.5281/ZENODO.8408897</a>."},"related_material":{"record":[{"status":"public","relation":"used_in_publication","id":"14517"}]},"main_file_link":[{"url":"https://doi.org/10.5281/ZENODO.8408897","open_access":"1"}],"article_processing_charge":"No","ddc":["530"]},{"has_accepted_license":"1","date_created":"2023-01-25T09:17:02Z","page":"168","type":"dissertation","department":[{"_id":"GradSch"},{"_id":"JoFi"}],"language":[{"iso":"eng"}],"article_processing_charge":"No","day":"26","author":[{"last_name":"Redchenko","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","first_name":"Elena","full_name":"Redchenko, Elena"}],"project":[{"call_identifier":"H2020","name":"International IST Doctoral Program","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","grant_number":"665385"},{"call_identifier":"H2020","name":"A Fiber Optic Transceiver for Superconducting Qubits","_id":"26336814-B435-11E9-9278-68D0E5697425","grant_number":"758053"},{"grant_number":"862644","_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E","call_identifier":"H2020","name":"Quantum readout techniques and technologies"}],"file":[{"relation":"main_file","content_type":"application/pdf","file_size":56076868,"embargo":"2022-12-28","file_name":"Final_Thesis_ES_Redchenko.pdf","date_updated":"2023-01-26T23:30:44Z","date_created":"2023-01-25T09:41:49Z","checksum":"39eabb1e006b41335f17f3b29af09648","creator":"cchlebak","file_id":"12367","access_level":"open_access"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","publisher":"Institute of Science and Technology Austria","title":"Controllable states of superconducting Qubit ensembles","alternative_title":["ISTA Thesis"],"degree_awarded":"PhD","supervisor":[{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","first_name":"Johannes M","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M"}],"doi":"10.15479/at:ista:12132","publication_status":"published","oa_version":"Published Version","date_published":"2022-09-26T00:00:00Z","file_date_updated":"2023-01-26T23:30:44Z","ddc":["530"],"citation":{"chicago":"Redchenko, Elena. “Controllable States of Superconducting Qubit Ensembles.” Institute of Science and Technology Austria, 2022. <a href=\"https://doi.org/10.15479/at:ista:12132\">https://doi.org/10.15479/at:ista:12132</a>.","apa":"Redchenko, E. (2022). <i>Controllable states of superconducting Qubit ensembles</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:12132\">https://doi.org/10.15479/at:ista:12132</a>","mla":"Redchenko, Elena. <i>Controllable States of Superconducting Qubit Ensembles</i>. Institute of Science and Technology Austria, 2022, doi:<a href=\"https://doi.org/10.15479/at:ista:12132\">10.15479/at:ista:12132</a>.","ista":"Redchenko E. 2022. Controllable states of superconducting Qubit ensembles. Institute of Science and Technology Austria.","short":"E. Redchenko, Controllable States of Superconducting Qubit Ensembles, Institute of Science and Technology Austria, 2022.","ieee":"E. Redchenko, “Controllable states of superconducting Qubit ensembles,” Institute of Science and Technology Austria, 2022.","ama":"Redchenko E. Controllable states of superconducting Qubit ensembles. 2022. doi:<a href=\"https://doi.org/10.15479/at:ista:12132\">10.15479/at:ista:12132</a>"},"abstract":[{"text":"Recent substantial advances in the feld of superconducting circuits have shown its\r\npotential as a leading platform for future quantum computing. In contrast to classical\r\ncomputers based on bits that are represented by a single binary value, 0 or 1, quantum\r\nbits (or qubits) can be in a superposition of both. Thus, quantum computers can store\r\nand handle more information at the same time and a quantum advantage has already\r\nbeen demonstrated for two types of computational tasks. Rapid progress in academic\r\nand industry labs accelerates the development of superconducting processors which may\r\nsoon fnd applications in complex computations, chemical simulations, cryptography, and\r\noptimization. Now that these machines are scaled up to tackle such problems the questions\r\nof qubit interconnects and networks becomes very relevant. How to route signals on-chip\r\nbetween diferent processor components? What is the most efcient way to entangle\r\nqubits? And how to then send and process entangled signals between distant cryostats\r\nhosting superconducting processors?\r\nIn this thesis, we are looking for solutions to these problems by studying the collective\r\nbehavior of superconducting qubit ensembles. We frst demonstrate on-demand tunable\r\ndirectional scattering of microwave photons from a pair of qubits in a waveguide. Such a\r\ndevice can route microwave photons on-chip with a high diode efciency. Then we focus\r\non studying ultra-strong coupling regimes between light (microwave photons) and matter\r\n(superconducting qubits), a regime that could be promising for extremely fast multi-qubit\r\nentanglement generation. Finally, we show coherent pulse storage and periodic revivals\r\nin a fve qubit ensemble strongly coupled to a resonator. Such a reconfgurable storage\r\ndevice could be used as part of a quantum repeater that is needed for longer-distance\r\nquantum communication.\r\nThe achieved high degree of control over multi-qubit ensembles highlights not only the\r\nbeautiful physics of circuit quantum electrodynamics, it also represents the frst step\r\ntoward new quantum simulation and communication methods, and certain techniques\r\nmay also fnd applications in future superconducting quantum computing hardware.\r\n","lang":"eng"}],"date_updated":"2024-08-07T07:11:56Z","year":"2022","acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"},{"_id":"EM-Fac"}],"_id":"12366","status":"public","oa":1,"publication_identifier":{"isbn":["978-3-99078-024-4"],"issn":["2663-337X"]},"month":"09","ec_funded":1},{"ddc":["530"],"article_processing_charge":"No","main_file_link":[{"url":"https://doi.org/10.5281/zenodo.5592104","open_access":"1"}],"related_material":{"record":[{"id":"9928","relation":"used_in_publication","status":"public"}]},"citation":{"chicago":"Peruzzo, Matilda, Farid Hassani, Grisha Szep, Andrea Trioni, Elena Redchenko, Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction.” Zenodo, 2021. <a href=\"https://doi.org/10.5281/ZENODO.5592103\">https://doi.org/10.5281/ZENODO.5592103</a>.","mla":"Peruzzo, Matilda, et al. <i>Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction</i>. Zenodo, 2021, doi:<a href=\"https://doi.org/10.5281/ZENODO.5592103\">10.5281/ZENODO.5592103</a>.","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. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.5592103\">https://doi.org/10.5281/ZENODO.5592103</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, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.5592103\">10.5281/ZENODO.5592103</a>.","short":"M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M. Fink, (2021).","ama":"Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. 2021. doi:<a href=\"https://doi.org/10.5281/ZENODO.5592103\">10.5281/ZENODO.5592103</a>","ieee":"M. Peruzzo <i>et al.</i>, “Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction.” Zenodo, 2021."},"date_created":"2023-05-23T13:42:27Z","doi":"10.5281/ZENODO.5592103","date_published":"2021-10-22T00:00:00Z","department":[{"_id":"JoFi"}],"oa_version":"Published Version","type":"research_data_reference","oa":1,"title":"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","publisher":"Zenodo","month":"10","year":"2021","day":"22","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"abstract":[{"text":"This dataset comprises all data shown in the figures of the submitted article \"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction\". Additional raw data are available from the corresponding author on reasonable request.","lang":"eng"}],"date_updated":"2023-08-11T10:44:21Z","_id":"13057","author":[{"first_name":"Matilda","orcid":"0000-0002-3415-4628","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","last_name":"Peruzzo","full_name":"Peruzzo, Matilda"},{"id":"2AED110C-F248-11E8-B48F-1D18A9856A87","last_name":"Hassani","orcid":"0000-0001-6937-5773","first_name":"Farid","full_name":"Hassani, Farid"},{"last_name":"Szep","first_name":"Grisha","full_name":"Szep, Grisha"},{"first_name":"Andrea","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","last_name":"Trioni","full_name":"Trioni, Andrea"},{"id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko","first_name":"Elena","full_name":"Redchenko, Elena"},{"last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","first_name":"Martin","full_name":"Zemlicka, Martin"},{"orcid":"0000-0001-8112-028X","first_name":"Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","full_name":"Fink, Johannes M"}]},{"ddc":["530"],"file_date_updated":"2022-01-18T11:29:33Z","scopus_import":"1","intvolume":"         2","citation":{"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>.","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>.","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.","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>","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>","short":"M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M. Fink, PRX Quantum 2 (2021) 040341."},"doi":"10.1103/PRXQuantum.2.040341","publication_status":"published","date_published":"2021-11-24T00:00:00Z","oa_version":"Published Version","publication_identifier":{"eissn":["2691-3399"]},"oa":1,"status":"public","ec_funded":1,"month":"11","year":"2021","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."}],"arxiv":1,"issue":"4","date_updated":"2023-09-07T13:31:22Z","_id":"9928","acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"article_type":"original","article_processing_charge":"No","related_material":{"record":[{"status":"public","relation":"research_data","id":"13057"},{"id":"9920","relation":"dissertation_contains","status":"public"}]},"keyword":["quantum physics","mesoscale and nanoscale physics"],"volume":2,"quality_controlled":"1","external_id":{"isi":["000723015100001"],"arxiv":["2106.05882"]},"publication":"PRX Quantum","page":"040341","date_created":"2021-08-17T08:14:18Z","has_accepted_license":"1","department":[{"_id":"JoFi"},{"_id":"NanoFab"},{"_id":"M-Shop"}],"language":[{"iso":"eng"}],"type":"journal_article","title":"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","publisher":"American Physical Society","day":"24","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"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.","file":[{"success":1,"file_size":4247422,"relation":"main_file","content_type":"application/pdf","date_created":"2022-01-18T11:29:33Z","file_name":"2021_PRXQuantum_Peruzzo.pdf","date_updated":"2022-01-18T11:29:33Z","access_level":"open_access","file_id":"10641","creator":"cchlebak","checksum":"36eb41ea43d8ca22b0efab12419e4eb2"}],"author":[{"full_name":"Peruzzo, Matilda","first_name":"Matilda","orcid":"0000-0002-3415-4628","last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Hassani, Farid","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","first_name":"Farid","orcid":"0000-0001-6937-5773"},{"last_name":"Szep","first_name":"Gregory","full_name":"Szep, Gregory"},{"first_name":"Andrea","last_name":"Trioni","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","full_name":"Trioni, Andrea"},{"full_name":"Redchenko, Elena","first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko"},{"id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka","first_name":"Martin","full_name":"Zemlicka, Martin"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M"}],"isi":1,"project":[{"call_identifier":"FWF","name":"Integrating superconducting quantum circuits","grant_number":"F07105","_id":"26927A52-B435-11E9-9278-68D0E5697425"},{"call_identifier":"H2020","name":"International IST Doctoral Program","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","grant_number":"665385"},{"name":"Hybrid Semiconductor - Superconductor Quantum Devices","_id":"2622978C-B435-11E9-9278-68D0E5697425"}]},{"publisher":"Springer Nature","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","title":"Converting microwave and telecom photons with a silicon photonic nanomechanical interface","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).","day":"08","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"project":[{"grant_number":"732894","_id":"257EB838-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"Hybrid Optomechanical Technologies"},{"_id":"26336814-B435-11E9-9278-68D0E5697425","grant_number":"758053","call_identifier":"H2020","name":"A Fiber Optic Transceiver for Superconducting Qubits"},{"_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"},{"_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E","grant_number":"862644","call_identifier":"H2020","name":"Quantum readout techniques and technologies"},{"name":"Coherent on-chip conversion of superconducting qubit signals from microwaves to optical frequencies","_id":"2671EB66-B435-11E9-9278-68D0E5697425"}],"isi":1,"author":[{"full_name":"Arnold, Georg M","last_name":"Arnold","id":"3770C838-F248-11E8-B48F-1D18A9856A87","first_name":"Georg M","orcid":"0000-0003-1397-7876"},{"full_name":"Wulf, Matthias","last_name":"Wulf","id":"45598606-F248-11E8-B48F-1D18A9856A87","first_name":"Matthias","orcid":"0000-0001-6613-1378"},{"full_name":"Barzanjeh, Shabir","first_name":"Shabir","orcid":"0000-0003-0415-1423","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","last_name":"Barzanjeh"},{"full_name":"Redchenko, Elena","last_name":"Redchenko","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","first_name":"Elena"},{"last_name":"Rueda Sanchez","id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87","first_name":"Alfredo R","orcid":"0000-0001-6249-5860","full_name":"Rueda Sanchez, Alfredo R"},{"full_name":"Hease, William J","id":"29705398-F248-11E8-B48F-1D18A9856A87","last_name":"Hease","orcid":"0000-0001-9868-2166","first_name":"William J"},{"full_name":"Hassani, Farid","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6937-5773","first_name":"Farid"},{"full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","first_name":"Johannes M","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"file":[{"access_level":"open_access","file_id":"8530","creator":"dernst","checksum":"88f92544889eb18bb38e25629a422a86","date_created":"2020-09-18T13:02:37Z","file_name":"2020_NatureComm_Arnold.pdf","date_updated":"2020-09-18T13:02:37Z","file_size":1002818,"success":1,"relation":"main_file","content_type":"application/pdf"}],"article_type":"original","article_processing_charge":"No","external_id":{"isi":["000577280200001"]},"volume":11,"quality_controlled":"1","keyword":["General Biochemistry","Genetics and Molecular Biology","General Physics and Astronomy","General Chemistry"],"related_material":{"link":[{"relation":"erratum","url":"https://doi.org/10.1038/s41467-020-18912-9"},{"url":"https://ist.ac.at/en/news/how-to-transport-microwave-quantum-information-via-optical-fiber/","relation":"press_release","description":"News on IST Homepage"}],"record":[{"id":"13056","status":"public","relation":"research_data"}]},"has_accepted_license":"1","date_created":"2020-09-18T10:56:20Z","publication":"Nature Communications","type":"journal_article","language":[{"iso":"eng"}],"department":[{"_id":"JoFi"}],"status":"public","oa":1,"publication_identifier":{"issn":["2041-1723"]},"month":"09","ec_funded":1,"date_updated":"2024-08-07T07:11:51Z","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."}],"year":"2020","article_number":"4460","acknowledged_ssus":[{"_id":"NanoFab"}],"_id":"8529","file_date_updated":"2020-09-18T13:02:37Z","ddc":["530"],"intvolume":"        11","citation":{"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).","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>","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.","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>.","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.","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>","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>."},"publication_status":"published","doi":"10.1038/s41467-020-18269-z","oa_version":"Published Version","date_published":"2020-09-08T00:00:00Z"},{"date_created":"2023-05-23T13:37:41Z","doi":"10.5281/ZENODO.3961561","department":[{"_id":"JoFi"}],"date_published":"2020-07-27T00:00:00Z","type":"research_data_reference","oa_version":"Published Version","ddc":["530"],"article_processing_charge":"No","main_file_link":[{"url":"https://doi.org/10.5281/zenodo.3961562","open_access":"1"}],"related_material":{"record":[{"id":"8529","status":"public","relation":"used_in_publication"}]},"citation":{"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, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.3961561\">10.5281/ZENODO.3961561</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. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.3961561\">https://doi.org/10.5281/ZENODO.3961561</a>","mla":"Arnold, Georg M., et al. <i>Converting Microwave and Telecom Photons with a Silicon Photonic Nanomechanical Interface</i>. Zenodo, 2020, doi:<a href=\"https://doi.org/10.5281/ZENODO.3961561\">10.5281/ZENODO.3961561</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.” Zenodo, 2020. <a href=\"https://doi.org/10.5281/ZENODO.3961561\">https://doi.org/10.5281/ZENODO.3961561</a>.","short":"G.M. Arnold, M. Wulf, S. Barzanjeh, E. Redchenko, A.R. Rueda Sanchez, W.J. Hease, F. Hassani, J.M. Fink, (2020).","ama":"Arnold GM, Wulf M, Barzanjeh S, et al. Converting microwave and telecom photons with a silicon photonic nanomechanical interface. 2020. doi:<a href=\"https://doi.org/10.5281/ZENODO.3961561\">10.5281/ZENODO.3961561</a>","ieee":"G. M. Arnold <i>et al.</i>, “Converting microwave and telecom photons with a silicon photonic nanomechanical interface.” Zenodo, 2020."},"year":"2020","day":"27","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"abstract":[{"lang":"eng","text":"This datasets comprises all data shown in plots of the submitted article \"Converting microwave and telecom photons with a silicon photonic nanomechanical interface\". Additional raw data are available from the corresponding author on reasonable request."}],"date_updated":"2024-09-10T12:23:51Z","_id":"13056","author":[{"first_name":"Georg M","orcid":"0000-0003-1397-7876","id":"3770C838-F248-11E8-B48F-1D18A9856A87","last_name":"Arnold","full_name":"Arnold, Georg M"},{"last_name":"Wulf","id":"45598606-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6613-1378","first_name":"Matthias","full_name":"Wulf, Matthias"},{"full_name":"Barzanjeh, Shabir","orcid":"0000-0003-0415-1423","first_name":"Shabir","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","last_name":"Barzanjeh"},{"full_name":"Redchenko, Elena","last_name":"Redchenko","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","first_name":"Elena"},{"full_name":"Rueda Sanchez, Alfredo R","id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87","last_name":"Rueda Sanchez","first_name":"Alfredo R","orcid":"0000-0001-6249-5860"},{"full_name":"Hease, William J","orcid":"0000-0001-9868-2166","first_name":"William J","last_name":"Hease","id":"29705398-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Hassani, Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","last_name":"Hassani","first_name":"Farid","orcid":"0000-0001-6937-5773"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","first_name":"Johannes M","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M"}],"oa":1,"title":"Converting microwave and telecom photons with a silicon photonic nanomechanical interface","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","publisher":"Zenodo","month":"07"},{"title":"Stationary entangled radiation from micromechanical motion","publisher":"Nature Publishing Group","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","day":"27","project":[{"call_identifier":"H2020","name":"Hybrid Optomechanical Technologies","grant_number":"732894","_id":"257EB838-B435-11E9-9278-68D0E5697425"},{"call_identifier":"H2020","name":"A Fiber Optic Transceiver for Superconducting Qubits","grant_number":"758053","_id":"26336814-B435-11E9-9278-68D0E5697425"},{"_id":"258047B6-B435-11E9-9278-68D0E5697425","grant_number":"707438","call_identifier":"H2020","name":"Microwave-to-Optical Quantum Link: Quantum Teleportation and Quantum Illumination with cavity Optomechanics"},{"_id":"2671EB66-B435-11E9-9278-68D0E5697425","name":"Coherent on-chip conversion of superconducting qubit signals from microwaves to optical frequencies"}],"author":[{"last_name":"Barzanjeh","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-0415-1423","first_name":"Shabir","full_name":"Barzanjeh, Shabir"},{"full_name":"Redchenko, Elena","first_name":"Elena","last_name":"Redchenko","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Peruzzo, Matilda","last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","first_name":"Matilda","orcid":"0000-0002-3415-4628"},{"orcid":"0000-0001-6613-1378","first_name":"Matthias","id":"45598606-F248-11E8-B48F-1D18A9856A87","last_name":"Wulf","full_name":"Wulf, Matthias"},{"full_name":"Lewis, Dylan","first_name":"Dylan","last_name":"Lewis"},{"full_name":"Arnold, Georg M","last_name":"Arnold","id":"3770C838-F248-11E8-B48F-1D18A9856A87","first_name":"Georg M","orcid":"0000-0003-1397-7876"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","first_name":"Johannes M","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M"}],"isi":1,"article_processing_charge":"No","external_id":{"isi":["000472860000042"],"arxiv":["1809.05865"]},"volume":570,"quality_controlled":"1","page":"480-483","date_created":"2019-07-07T21:59:20Z","publication":"Nature","language":[{"iso":"eng"}],"department":[{"_id":"JoFi"}],"type":"journal_article","oa":1,"status":"public","ec_funded":1,"month":"06","year":"2019","date_updated":"2024-08-07T07:11:54Z","arxiv":1,"abstract":[{"lang":"eng","text":"Mechanical systems facilitate the development of a hybrid quantum technology comprising electrical, optical, atomic and acoustic degrees of freedom1, and entanglement is essential to realize quantum-enabled devices. Continuous-variable entangled fields—known as Einstein–Podolsky–Rosen (EPR) states—are spatially separated two-mode squeezed states that can be used for quantum teleportation and quantum communication2. In the optical domain, EPR states are typically generated using nondegenerate optical amplifiers3, and at microwave frequencies Josephson circuits can serve as a nonlinear medium4,5,6. An outstanding goal is to deterministically generate and distribute entangled states with a mechanical oscillator, which requires a carefully arranged balance between excitation, cooling and dissipation in an ultralow noise environment. Here we observe stationary emission of path-entangled microwave radiation from a parametrically driven 30-micrometre-long silicon nanostring oscillator, squeezing the joint field operators of two thermal modes by 3.40 decibels below the vacuum level. The motion of this micromechanical system correlates up to 50 photons per second per hertz, giving rise to a quantum discord that is robust with respect to microwave noise7. Such generalized quantum correlations of separable states are important for quantum-enhanced detection8 and provide direct evidence of the non-classical nature of the mechanical oscillator without directly measuring its state9. This noninvasive measurement scheme allows to infer information about otherwise inaccessible objects, with potential implications for sensing, open-system dynamics and fundamental tests of quantum gravity. In the future, similar on-chip devices could be used to entangle subsystems on very different energy scales, such as microwave and optical photons."}],"_id":"6609","acknowledged_ssus":[{"_id":"NanoFab"}],"scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1809.05865"}],"intvolume":"       570","citation":{"ieee":"S. Barzanjeh <i>et al.</i>, “Stationary entangled radiation from micromechanical motion,” <i>Nature</i>, vol. 570. Nature Publishing Group, pp. 480–483, 2019.","ama":"Barzanjeh S, Redchenko E, Peruzzo M, et al. Stationary entangled radiation from micromechanical motion. <i>Nature</i>. 2019;570:480-483. doi:<a href=\"https://doi.org/10.1038/s41586-019-1320-2\">10.1038/s41586-019-1320-2</a>","short":"S. Barzanjeh, E. Redchenko, M. Peruzzo, M. Wulf, D. Lewis, G.M. Arnold, J.M. Fink, Nature 570 (2019) 480–483.","apa":"Barzanjeh, S., Redchenko, E., Peruzzo, M., Wulf, M., Lewis, D., Arnold, G. M., &#38; Fink, J. M. (2019). Stationary entangled radiation from micromechanical motion. <i>Nature</i>. Nature Publishing Group. <a href=\"https://doi.org/10.1038/s41586-019-1320-2\">https://doi.org/10.1038/s41586-019-1320-2</a>","ista":"Barzanjeh S, Redchenko E, Peruzzo M, Wulf M, Lewis D, Arnold GM, Fink JM. 2019. Stationary entangled radiation from micromechanical motion. Nature. 570, 480–483.","mla":"Barzanjeh, Shabir, et al. “Stationary Entangled Radiation from Micromechanical Motion.” <i>Nature</i>, vol. 570, Nature Publishing Group, 2019, pp. 480–83, doi:<a href=\"https://doi.org/10.1038/s41586-019-1320-2\">10.1038/s41586-019-1320-2</a>.","chicago":"Barzanjeh, Shabir, Elena Redchenko, Matilda Peruzzo, Matthias Wulf, Dylan Lewis, Georg M Arnold, and Johannes M Fink. “Stationary Entangled Radiation from Micromechanical Motion.” <i>Nature</i>. Nature Publishing Group, 2019. <a href=\"https://doi.org/10.1038/s41586-019-1320-2\">https://doi.org/10.1038/s41586-019-1320-2</a>."},"publication_status":"published","doi":"10.1038/s41586-019-1320-2","date_published":"2019-06-27T00:00:00Z","oa_version":"Preprint"},{"month":"04","status":"public","oa":1,"article_number":" 043812 ","_id":"307","arxiv":1,"issue":"4","abstract":[{"text":"Spontaneous emission spectra of two initially excited closely spaced identical atoms are very sensitive to the strength and the direction of the applied magnetic field. We consider the relevant schemes that ensure the determination of the mutual spatial orientation of the atoms and the distance between them by entirely optical means. A corresponding theoretical description is given accounting for the dipole-dipole interaction between the two atoms in the presence of a magnetic field and for polarizations of the quantum field interacting with magnetic sublevels of the two-atom system. ","lang":"eng"}],"date_updated":"2023-09-13T09:00:41Z","year":"2018","citation":{"short":"E. Redchenko, A. Makarov, V. Yudson,  Physical Review A - Atomic, Molecular, and Optical Physics 97 (2018).","ieee":"E. Redchenko, A. Makarov, and V. Yudson, “Nanoscopy of pairs of atoms by fluorescence in a magnetic field,” <i> Physical Review A - Atomic, Molecular, and Optical Physics</i>, vol. 97, no. 4. American Physical Society, 2018.","ama":"Redchenko E, Makarov A, Yudson V. Nanoscopy of pairs of atoms by fluorescence in a magnetic field. <i> Physical Review A - Atomic, Molecular, and Optical Physics</i>. 2018;97(4). doi:<a href=\"https://doi.org/10.1103/PhysRevA.97.043812\">10.1103/PhysRevA.97.043812</a>","apa":"Redchenko, E., Makarov, A., &#38; Yudson, V. (2018). Nanoscopy of pairs of atoms by fluorescence in a magnetic field. <i> Physical Review A - Atomic, Molecular, and Optical Physics</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevA.97.043812\">https://doi.org/10.1103/PhysRevA.97.043812</a>","ista":"Redchenko E, Makarov A, Yudson V. 2018. Nanoscopy of pairs of atoms by fluorescence in a magnetic field.  Physical Review A - Atomic, Molecular, and Optical Physics. 97(4), 043812.","mla":"Redchenko, Elena, et al. “Nanoscopy of Pairs of Atoms by Fluorescence in a Magnetic Field.” <i> Physical Review A - Atomic, Molecular, and Optical Physics</i>, vol. 97, no. 4, 043812, American Physical Society, 2018, doi:<a href=\"https://doi.org/10.1103/PhysRevA.97.043812\">10.1103/PhysRevA.97.043812</a>.","chicago":"Redchenko, Elena, Alexander Makarov, and Vladimir Yudson. “Nanoscopy of Pairs of Atoms by Fluorescence in a Magnetic Field.” <i> Physical Review A - Atomic, Molecular, and Optical Physics</i>. American Physical Society, 2018. <a href=\"https://doi.org/10.1103/PhysRevA.97.043812\">https://doi.org/10.1103/PhysRevA.97.043812</a>."},"intvolume":"        97","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1712.10127"}],"scopus_import":"1","oa_version":"Submitted Version","date_published":"2018-04-09T00:00:00Z","doi":"10.1103/PhysRevA.97.043812","publication_status":"published","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","publisher":"American Physical Society","title":"Nanoscopy of pairs of atoms by fluorescence in a magnetic field","author":[{"first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko","full_name":"Redchenko, Elena"},{"full_name":"Makarov, Alexander","last_name":"Makarov","first_name":"Alexander"},{"last_name":"Yudson","first_name":"Vladimir","full_name":"Yudson, Vladimir"}],"isi":1,"acknowledgement":"The work was partially supported by Russian Foundation for Basic Research (Grant No. 15-02-05657a) and by the Basic research program of Higher School of Economics (HSE).","day":"09","volume":97,"quality_controlled":"1","external_id":{"arxiv":["1712.10127"],"isi":["000429454000015"]},"article_type":"original","article_processing_charge":"No","publist_id":"7572","type":"journal_article","department":[{"_id":"JoFi"}],"language":[{"iso":"eng"}],"publication":" Physical Review A - Atomic, Molecular, and Optical Physics","date_created":"2018-12-11T11:45:44Z"},{"year":"2016","issue":"22","abstract":[{"lang":"eng","text":"We study a polar molecule immersed in a superfluid environment, such as a helium nanodroplet or a Bose–Einstein condensate, in the presence of a strong electrostatic field. We show that coupling of the molecular pendular motion, induced by the field, to the fluctuating bath leads to formation of pendulons—spherical harmonic librators dressed by a field of many-particle excitations. We study the behavior of the pendulon in a broad range of molecule–bath and molecule–field interaction strengths, and reveal that its spectrum features a series of instabilities which are absent in the field-free case of the angulon quasiparticle. Furthermore, we show that an external field allows to fine-tune the positions of these instabilities in the molecular rotational spectrum. This opens the door to detailed experimental studies of redistribution of orbital angular momentum in many-particle systems. © 2016 Wiley-VCH Verlag GmbH &amp; Co. KGaA, Weinheim"}],"date_updated":"2021-01-12T06:49:05Z","_id":"1206","oa":1,"status":"public","ec_funded":1,"month":"09","doi":"10.1002/cphc.201601042","publication_status":"published","date_published":"2016-09-18T00:00:00Z","oa_version":"Preprint","main_file_link":[{"url":"https://arxiv.org/abs/1609.08161","open_access":"1"}],"scopus_import":1,"intvolume":"        17","citation":{"short":"E. Redchenko, M. Lemeshko, ChemPhysChem 17 (2016) 3649–3654.","ieee":"E. Redchenko and M. Lemeshko, “Libration of strongly oriented polar molecules inside a superfluid,” <i>ChemPhysChem</i>, vol. 17, no. 22. Wiley-Blackwell, pp. 3649–3654, 2016.","ama":"Redchenko E, Lemeshko M. Libration of strongly oriented polar molecules inside a superfluid. <i>ChemPhysChem</i>. 2016;17(22):3649-3654. doi:<a href=\"https://doi.org/10.1002/cphc.201601042\">10.1002/cphc.201601042</a>","chicago":"Redchenko, Elena, and Mikhail Lemeshko. “Libration of Strongly Oriented Polar Molecules inside a Superfluid.” <i>ChemPhysChem</i>. Wiley-Blackwell, 2016. <a href=\"https://doi.org/10.1002/cphc.201601042\">https://doi.org/10.1002/cphc.201601042</a>.","ista":"Redchenko E, Lemeshko M. 2016. Libration of strongly oriented polar molecules inside a superfluid. ChemPhysChem. 17(22), 3649–3654.","mla":"Redchenko, Elena, and Mikhail Lemeshko. “Libration of Strongly Oriented Polar Molecules inside a Superfluid.” <i>ChemPhysChem</i>, vol. 17, no. 22, Wiley-Blackwell, 2016, pp. 3649–54, doi:<a href=\"https://doi.org/10.1002/cphc.201601042\">10.1002/cphc.201601042</a>.","apa":"Redchenko, E., &#38; Lemeshko, M. (2016). Libration of strongly oriented polar molecules inside a superfluid. <i>ChemPhysChem</i>. Wiley-Blackwell. <a href=\"https://doi.org/10.1002/cphc.201601042\">https://doi.org/10.1002/cphc.201601042</a>"},"day":"18","author":[{"full_name":"Redchenko, Elena","first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko"},{"last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail"}],"project":[{"name":"International IST Doctoral Program","call_identifier":"H2020","grant_number":"665385","_id":"2564DBCA-B435-11E9-9278-68D0E5697425"}],"title":"Libration of strongly oriented polar molecules inside a superfluid","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","publisher":"Wiley-Blackwell","publication":"ChemPhysChem","page":"3649 - 3654","date_created":"2018-12-11T11:50:43Z","department":[{"_id":"JoFi"},{"_id":"MiLe"}],"language":[{"iso":"eng"}],"type":"journal_article","publist_id":"6140","quality_controlled":"1","volume":17}]