[{"date_created":"2024-02-18T23:01:00Z","citation":{"apa":"Petrova, E., Tiunov, E. S., Bañuls, M. C., &#38; Fedorov, A. K. (2024). Fractal states of the Schwinger model. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.132.050401\">https://doi.org/10.1103/PhysRevLett.132.050401</a>","short":"E. Petrova, E.S. Tiunov, M.C. Bañuls, A.K. Fedorov, Physical Review Letters 132 (2024).","ieee":"E. Petrova, E. S. Tiunov, M. C. Bañuls, and A. K. Fedorov, “Fractal states of the Schwinger model,” <i>Physical Review Letters</i>, vol. 132, no. 5. American Physical Society, 2024.","ama":"Petrova E, Tiunov ES, Bañuls MC, Fedorov AK. Fractal states of the Schwinger model. <i>Physical Review Letters</i>. 2024;132(5). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.132.050401\">10.1103/PhysRevLett.132.050401</a>","mla":"Petrova, Elena, et al. “Fractal States of the Schwinger Model.” <i>Physical Review Letters</i>, vol. 132, no. 5, 050401, American Physical Society, 2024, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.132.050401\">10.1103/PhysRevLett.132.050401</a>.","ista":"Petrova E, Tiunov ES, Bañuls MC, Fedorov AK. 2024. Fractal states of the Schwinger model. Physical Review Letters. 132(5), 050401.","chicago":"Petrova, Elena, Egor S. Tiunov, Mari Carmen Bañuls, and Aleksey K. Fedorov. “Fractal States of the Schwinger Model.” <i>Physical Review Letters</i>. American Physical Society, 2024. <a href=\"https://doi.org/10.1103/PhysRevLett.132.050401\">https://doi.org/10.1103/PhysRevLett.132.050401</a>."},"acknowledgement":"We thank A. Bargov, I. Khaymovich, and V. Tiunova for fruitful discussions and for useful comments. M. C. B. thanks S. Kühn for discussions about the phase structure of the model. A. K. F. thanks V. Gritsev and A. Garkun for insightful comments. E. V. P., E. S. T., and A. K. F. are\r\nsupported by the RSF Grant No. 20-42-05002 (studying the fractal Ansatz) and the Roadmap on Quantum Computing (Contract No. 868-1.3-15/15-2021, October 5, 2021; calculating on GS energies). A. K. F. thanks the Priority 2030 program at the NIST “MISIS” under the project No. K1-2022-027. M. C. B. was partly funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy—EXC-2111–390814868.","year":"2024","article_number":"050401","_id":"15002","article_type":"original","doi":"10.1103/PhysRevLett.132.050401","publication_status":"published","external_id":{"arxiv":["2201.10220"]},"abstract":[{"lang":"eng","text":"The lattice Schwinger model, the discrete version of QED in \r\n1\r\n+\r\n1\r\n dimensions, is a well-studied test bench for lattice gauge theories. Here, we study the fractal properties of this model. We reveal the self-similarity of the ground state, which allows us to develop a recurrent procedure for finding the ground-state wave functions and predicting ground-state energies. We present the results of recurrently calculating ground-state wave functions using the fractal Ansatz and automized software package for fractal image processing. In certain parameter regimes, just a few terms are enough for our recurrent procedure to predict ground-state energies close to the exact ones for several hundreds of sites. Our findings pave the way to understanding the complexity of calculating many-body wave functions in terms of their fractal properties as well as finding new links between condensed matter and high-energy lattice models."}],"department":[{"_id":"MaSe"}],"volume":132,"quality_controlled":"1","publisher":"American Physical Society","date_published":"2024-01-30T00:00:00Z","title":"Fractal states of the Schwinger model","oa":1,"date_updated":"2024-02-26T08:03:31Z","issue":"5","article_processing_charge":"No","scopus_import":"1","intvolume":"       132","language":[{"iso":"eng"}],"publication":"Physical Review Letters","author":[{"id":"0ac84990-897b-11ed-a09c-f5abb56a4ede","last_name":"Petrova","full_name":"Petrova, Elena","first_name":"Elena"},{"last_name":"Tiunov","full_name":"Tiunov, Egor S.","first_name":"Egor S."},{"first_name":"Mari Carmen","full_name":"Bañuls, Mari Carmen","last_name":"Bañuls"},{"first_name":"Aleksey K.","full_name":"Fedorov, Aleksey K.","last_name":"Fedorov"}],"arxiv":1,"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2201.10220"}],"oa_version":"Preprint","day":"30","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","month":"01","publication_identifier":{"issn":["0031-9007"],"eissn":["1079-7114"]},"status":"public","type":"journal_article"},{"publisher":"Institute of Science and Technology Austria","date_published":"2023-03-21T00:00:00Z","supervisor":[{"orcid":"0000-0002-2399-5827","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","last_name":"Serbyn","first_name":"Maksym","full_name":"Serbyn, Maksym"}],"department":[{"_id":"GradSch"},{"_id":"MaSe"}],"page":"158","project":[{"call_identifier":"H2020","name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","grant_number":"850899"}],"ddc":["530"],"tmp":{"image":"/images/cc_by_nc_sa.png","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)"},"abstract":[{"lang":"eng","text":"Nonergodic systems, whose out-of-equilibrium dynamics fail to thermalize, provide a fascinating research direction both for fundamental reasons and for application in state of the art quantum devices.\r\nGoing beyond the description of statistical mechanics, ergodicity breaking yields a new paradigm in quantum many-body physics, introducing novel phases of matter with no counterpart at equilibrium.\r\nIn this Thesis, we address different open questions in the field, focusing on disorder-induced many-body localization (MBL) and on weak ergodicity breaking in kinetically constrained models.\r\nIn particular, we contribute to the debate about transport in kinetically constrained models, studying the effect of $U(1)$ conservation and inversion-symmetry breaking in a family of quantum East models.\r\nUsing tensor network techniques, we analyze the dynamics of large MBL systems beyond the limit of exact numerical methods.\r\nIn this setting, we approach the debated topic of the coexistence of localized and thermal eigenstates separated by energy thresholds known as many-body mobility edges.\r\nInspired by recent experiments, our work further investigates the localization of a small bath induced by the coupling to a large localized chain, the so-called MBL proximity effect.\r\n\r\nIn the first Chapter, we introduce a family of particle-conserving kinetically constrained models, inspired by the quantum East model.\r\nThe system we study features strong inversion-symmetry breaking, due to the nature of the correlated hopping.\r\nWe show that these models host so-called quantum Hilbert space fragmentation, consisting of disconnected subsectors in an entangled basis, and further provide an analytical description of this phenomenon.\r\nWe further probe its effect on dynamics of simple product states, showing revivals in fidelity and local observalbes.\r\nThe study of dynamics within the largest subsector reveals an anomalous transient superdiffusive behavior crossing over to slow logarithmic dynamics at later times.\r\nThis work suggests that particle conserving constrained models with inversion-symmetry breaking realize new universality classes of dynamics and invite their further theoretical and experimental studies.\r\n\r\nNext, we use kinetic constraints and disorder to design a model with many-body mobility edges in particle density.\r\nThis feature allows to study the dynamics of localized and thermal states in large systems beyond the limitations of previous studies.\r\nThe time-evolution shows typical signatures of localization at small densities, replaced by thermal behavior at larger densities.\r\nOur results provide evidence in favor of the stability of many-body mobility edges, which was recently challenged by a theoretical argument.\r\nTo support our findings, we probe the mechanism proposed as a cause of delocalization in many-body localized systems with mobility edges suggesting its ineffectiveness in the model studied.\r\n\r\nIn the last Chapter of this Thesis, we address the topic of many-body localization proximity effect.\r\nWe study a model inspired by recent experiments, featuring Anderson localized coupled to a small bath of free hard-core bosons.\r\nThe interaction among the two particle species results in non-trivial dynamics, which we probe using tensor network techniques.\r\nOur simulations show convincing evidence of many-body localization proximity effect when the bath is composed by a single free particle and interactions are strong.\r\nWe furthter observe an anomalous entanglement dynamics, which we explain through a phenomenological theory.\r\nFinally, we extract highly excited eigenstates of large systems, providing supplementary evidence in favor of our findings."}],"publication_status":"published","doi":"10.15479/at:ista:12732","file_date_updated":"2023-03-23T16:43:14Z","_id":"12732","acknowledged_ssus":[{"_id":"ScienComp"}],"ec_funded":1,"degree_awarded":"PhD","related_material":{"record":[{"id":"11470","relation":"part_of_dissertation","status":"public"},{"status":"public","id":"8308","relation":"part_of_dissertation"},{"status":"public","relation":"part_of_dissertation","id":"11469"},{"status":"public","id":"12750","relation":"part_of_dissertation"}]},"year":"2023","citation":{"apa":"Brighi, P. (2023). <i>Ergodicity breaking in disordered and kinetically constrained quantum many-body systems</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:12732\">https://doi.org/10.15479/at:ista:12732</a>","ista":"Brighi P. 2023. Ergodicity breaking in disordered and kinetically constrained quantum many-body systems. Institute of Science and Technology Austria.","chicago":"Brighi, Pietro. “Ergodicity Breaking in Disordered and Kinetically Constrained Quantum Many-Body Systems.” Institute of Science and Technology Austria, 2023. <a href=\"https://doi.org/10.15479/at:ista:12732\">https://doi.org/10.15479/at:ista:12732</a>.","mla":"Brighi, Pietro. <i>Ergodicity Breaking in Disordered and Kinetically Constrained Quantum Many-Body Systems</i>. Institute of Science and Technology Austria, 2023, doi:<a href=\"https://doi.org/10.15479/at:ista:12732\">10.15479/at:ista:12732</a>.","short":"P. Brighi, Ergodicity Breaking in Disordered and Kinetically Constrained Quantum Many-Body Systems, Institute of Science and Technology Austria, 2023.","ama":"Brighi P. Ergodicity breaking in disordered and kinetically constrained quantum many-body systems. 2023. doi:<a href=\"https://doi.org/10.15479/at:ista:12732\">10.15479/at:ista:12732</a>","ieee":"P. Brighi, “Ergodicity breaking in disordered and kinetically constrained quantum many-body systems,” Institute of Science and Technology Austria, 2023."},"date_created":"2023-03-17T13:30:48Z","alternative_title":["ISTA Thesis"],"status":"public","type":"dissertation","publication_identifier":{"issn":["2663-337X"]},"month":"03","oa_version":"None","day":"21","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","file":[{"checksum":"5d2de651ef9449c1b8dc27148ca74777","file_name":"Thesis_sub_PBrighi.zip","file_id":"12753","date_created":"2023-03-23T16:42:56Z","date_updated":"2023-03-23T16:42:56Z","creator":"pbrighi","content_type":"application/zip","access_level":"closed","file_size":42167561,"relation":"source_file"},{"creator":"pbrighi","access_level":"open_access","content_type":"application/pdf","file_size":13977000,"relation":"main_file","success":1,"checksum":"7caa153d4a5b0873a79358787d2dfe1e","file_name":"Thesis_PBrighi.pdf","file_id":"12754","date_created":"2023-03-23T16:43:14Z","date_updated":"2023-03-23T16:43:14Z"}],"author":[{"first_name":"Pietro","full_name":"Brighi, Pietro","id":"4115AF5C-F248-11E8-B48F-1D18A9856A87","last_name":"Brighi","orcid":"0000-0002-7969-2729"}],"language":[{"iso":"eng"}],"has_accepted_license":"1","date_updated":"2023-09-20T10:44:12Z","oa":1,"article_processing_charge":"No","title":"Ergodicity breaking in disordered and kinetically constrained quantum many-body systems"},{"publication":"Physical Review B","language":[{"iso":"eng"}],"isi":1,"intvolume":"       107","scopus_import":"1","article_processing_charge":"No","issue":"10","date_updated":"2023-08-01T13:59:29Z","oa":1,"title":"Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity","type":"journal_article","status":"public","month":"03","publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","oa_version":"Preprint","day":"01","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2211.02492","open_access":"1"}],"arxiv":1,"author":[{"first_name":"Areg","full_name":"Ghazaryan, Areg","orcid":"0000-0001-9666-3543","id":"4AF46FD6-F248-11E8-B48F-1D18A9856A87","last_name":"Ghazaryan"},{"last_name":"Holder","full_name":"Holder, Tobias","first_name":"Tobias"},{"first_name":"Erez","full_name":"Berg, Erez","last_name":"Berg"},{"full_name":"Serbyn, Maksym","first_name":"Maksym","last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2399-5827"}],"doi":"10.1103/PhysRevB.107.104502","article_type":"original","_id":"12790","article_number":"104502","related_material":{"link":[{"description":"News on the ISTA website","url":"https://ista.ac.at/en/news/reaching-superconductivity-layer-by-layer/","relation":"press_release"}]},"year":"2023","acknowledgement":"E.B. and T.H. were supported by the European Research Council (ERC) under grant HQMAT (Grant Agreement No. 817799), by the Israel-USA Binational Science Foundation (BSF), and by a Research grant from Irving and Cherna Moskowitz.","date_created":"2023-04-02T22:01:10Z","citation":{"short":"A. Ghazaryan, T. Holder, E. Berg, M. Serbyn, Physical Review B 107 (2023).","ieee":"A. Ghazaryan, T. Holder, E. Berg, and M. Serbyn, “Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity,” <i>Physical Review B</i>, vol. 107, no. 10. American Physical Society, 2023.","ama":"Ghazaryan A, Holder T, Berg E, Serbyn M. Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity. <i>Physical Review B</i>. 2023;107(10). doi:<a href=\"https://doi.org/10.1103/PhysRevB.107.104502\">10.1103/PhysRevB.107.104502</a>","mla":"Ghazaryan, Areg, et al. “Multilayer Graphenes as a Platform for Interaction-Driven Physics and Topological Superconductivity.” <i>Physical Review B</i>, vol. 107, no. 10, 104502, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/PhysRevB.107.104502\">10.1103/PhysRevB.107.104502</a>.","chicago":"Ghazaryan, Areg, Tobias Holder, Erez Berg, and Maksym Serbyn. “Multilayer Graphenes as a Platform for Interaction-Driven Physics and Topological Superconductivity.” <i>Physical Review B</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/PhysRevB.107.104502\">https://doi.org/10.1103/PhysRevB.107.104502</a>.","ista":"Ghazaryan A, Holder T, Berg E, Serbyn M. 2023. Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity. Physical Review B. 107(10), 104502.","apa":"Ghazaryan, A., Holder, T., Berg, E., &#38; Serbyn, M. (2023). Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.107.104502\">https://doi.org/10.1103/PhysRevB.107.104502</a>"},"date_published":"2023-03-01T00:00:00Z","publisher":"American Physical Society","volume":107,"quality_controlled":"1","department":[{"_id":"MaSe"},{"_id":"MiLe"}],"abstract":[{"lang":"eng","text":"Motivated by the recent discoveries of superconductivity in bilayer and trilayer graphene, we theoretically investigate superconductivity and other interaction-driven phases in multilayer graphene stacks. To this end, we study the density of states of multilayer graphene with up to four layers at the single-particle band structure level in the presence of a transverse electric field. Among the considered structures, tetralayer graphene with rhombohedral (ABCA) stacking reaches the highest density of states. We study the phases that can arise in ABCA graphene by tuning the carrier density and transverse electric field. For a broad region of the tuning parameters, the presence of strong Coulomb repulsion leads to a spontaneous spin and valley symmetry breaking via Stoner transitions. Using a model that incorporates the spontaneous spin and valley polarization, we explore the Kohn-Luttinger mechanism for superconductivity driven by repulsive Coulomb interactions. We find that the strongest superconducting instability is in the p-wave channel, and occurs in proximity to the onset of Stoner transitions. Interestingly, we find a range of densities and transverse electric fields where superconductivity develops out of a strongly corrugated, singly connected Fermi surface in each valley, leading to a topologically nontrivial chiral p+ip superconducting state with an even number of copropagating chiral Majorana edge modes. Our work establishes ABCA-stacked tetralayer graphene as a promising platform for observing strongly correlated physics and topological superconductivity."}],"external_id":{"isi":["000945526400003"],"arxiv":["2211.02492"]},"publication_status":"published"},{"language":[{"iso":"eng"}],"publication":"Physical Review X","oa":1,"date_updated":"2023-08-01T14:11:28Z","issue":"1","article_processing_charge":"No","title":"Superdiffusive energy transport in kinetically constrained models","isi":1,"has_accepted_license":"1","scopus_import":"1","intvolume":"        13","type":"journal_article","status":"public","author":[{"first_name":"Marko","full_name":"Ljubotina, Marko","id":"F75EE9BE-5C90-11EA-905D-16643DDC885E","last_name":"Ljubotina"},{"full_name":"Desaules, Jean Yves","first_name":"Jean Yves","last_name":"Desaules"},{"id":"47809E7E-F248-11E8-B48F-1D18A9856A87","last_name":"Serbyn","orcid":"0000-0002-2399-5827","full_name":"Serbyn, Maksym","first_name":"Maksym"},{"last_name":"Papić","first_name":"Zlatko","full_name":"Papić, Zlatko"}],"publication_identifier":{"eissn":["2160-3308"]},"month":"03","oa_version":"Published Version","day":"07","file":[{"relation":"main_file","access_level":"open_access","content_type":"application/pdf","file_size":1958523,"creator":"dernst","date_created":"2023-04-17T08:36:53Z","date_updated":"2023-04-17T08:36:53Z","success":1,"file_name":"2023_PhysReviewX_Ljubotina.pdf","file_id":"12845","checksum":"ee060cea609af79bba7af74b1ce28078"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","file_date_updated":"2023-04-17T08:36:53Z","article_type":"original","_id":"12839","doi":"10.1103/PhysRevX.13.011033","acknowledgement":"We would like to thank Alexios Michailidis, Sarang Gopalakrishnan, and Achilleas Lazarides for useful comments. M. L. and M. S. acknowledge support by the European Research Council under the European Union’s Horizon 2020 research and innovation program (Grant\r\nAgreement No. 850899). J.-Y. D. and Z. P. acknowledge support by EPSRC Grant No. EP/R513258/1 and the Leverhulme Trust Research Leadership Grant No. RL2019-015. Statement of compliance with EPSRC policy framework on research data: This publication is theoretical work that does not require supporting research data. M. S., M. L., and Z. P. acknowledge support by the Erwin Schrödinger International Institute for Mathematics and\r\nPhysics. M. L. and M. S. acknowledge PRACE for awarding us access to Joliot-Curie at GENCI@CEA, France, where the TEBD simulations were performed. The TEBD\r\nsimulations were performed using the ITENSOR library [54].","year":"2023","date_created":"2023-04-16T22:01:09Z","citation":{"apa":"Ljubotina, M., Desaules, J. Y., Serbyn, M., &#38; Papić, Z. (2023). Superdiffusive energy transport in kinetically constrained models. <i>Physical Review X</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevX.13.011033\">https://doi.org/10.1103/PhysRevX.13.011033</a>","short":"M. Ljubotina, J.Y. Desaules, M. Serbyn, Z. Papić, Physical Review X 13 (2023).","ama":"Ljubotina M, Desaules JY, Serbyn M, Papić Z. Superdiffusive energy transport in kinetically constrained models. <i>Physical Review X</i>. 2023;13(1). doi:<a href=\"https://doi.org/10.1103/PhysRevX.13.011033\">10.1103/PhysRevX.13.011033</a>","ieee":"M. Ljubotina, J. Y. Desaules, M. Serbyn, and Z. Papić, “Superdiffusive energy transport in kinetically constrained models,” <i>Physical Review X</i>, vol. 13, no. 1. American Physical Society, 2023.","mla":"Ljubotina, Marko, et al. “Superdiffusive Energy Transport in Kinetically Constrained Models.” <i>Physical Review X</i>, vol. 13, no. 1, 011033, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/PhysRevX.13.011033\">10.1103/PhysRevX.13.011033</a>.","chicago":"Ljubotina, Marko, Jean Yves Desaules, Maksym Serbyn, and Zlatko Papić. “Superdiffusive Energy Transport in Kinetically Constrained Models.” <i>Physical Review X</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/PhysRevX.13.011033\">https://doi.org/10.1103/PhysRevX.13.011033</a>.","ista":"Ljubotina M, Desaules JY, Serbyn M, Papić Z. 2023. Superdiffusive energy transport in kinetically constrained models. Physical Review X. 13(1), 011033."},"ec_funded":1,"article_number":"011033","project":[{"name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","call_identifier":"H2020","grant_number":"850899","_id":"23841C26-32DE-11EA-91FC-C7463DDC885E"}],"publisher":"American Physical Society","date_published":"2023-03-07T00:00:00Z","department":[{"_id":"MaSe"}],"quality_controlled":"1","volume":13,"publication_status":"published","ddc":["530"],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"external_id":{"isi":["000957625700001"]},"abstract":[{"text":"Universal nonequilibrium properties of isolated quantum systems are typically probed by studying transport of conserved quantities, such as charge or spin, while transport of energy has received considerably less attention. Here, we study infinite-temperature energy transport in the kinetically constrained PXP model describing Rydberg atom quantum simulators. Our state-of-the-art numerical simulations, including exact diagonalization and time-evolving block decimation methods, reveal the existence of two distinct transport regimes. At moderate times, the energy-energy correlation function displays periodic oscillations due to families of eigenstates forming different su(2) representations hidden within the spectrum. These families of eigenstates generalize the quantum many-body scarred states found in previous works and leave an imprint on the infinite-temperature energy transport. At later times, we observe a long-lived superdiffusive transport regime that we attribute to the proximity of a nearby integrable point. While generic strong deformations of the PXP model indeed restore diffusive transport, adding a strong chemical potential intriguingly gives rise to a well-converged superdiffusive exponent z≈3/2. Our results suggest constrained models to be potential hosts of novel transport regimes and call for developing an analytic understanding of their energy transport.","lang":"eng"}]},{"author":[{"id":"dd622248-f6e0-11ea-865d-ce382a1c81a5","last_name":"Sack","orcid":"0000-0001-5400-8508","first_name":"Stefan","full_name":"Sack, Stefan"},{"orcid":"0000-0002-5383-2869","id":"CE680B90-D85A-11E9-B684-C920E6697425","last_name":"Medina Ramos","first_name":"Raimel A","full_name":"Medina Ramos, Raimel A"},{"first_name":"Richard","full_name":"Kueng, Richard","last_name":"Kueng"},{"id":"47809E7E-F248-11E8-B48F-1D18A9856A87","last_name":"Serbyn","orcid":"0000-0002-2399-5827","first_name":"Maksym","full_name":"Serbyn, Maksym"}],"arxiv":1,"month":"06","publication_identifier":{"eissn":["2469-9934"],"issn":["2469-9926"]},"oa_version":"Published Version","day":"02","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","file":[{"success":1,"file_id":"13131","checksum":"0d71423888eeccaa60d8f41197f26306","file_name":"2023_PhysRevA_Sack.pdf","date_created":"2023-06-13T07:28:36Z","date_updated":"2023-06-13T07:28:36Z","creator":"dernst","relation":"main_file","content_type":"application/pdf","access_level":"open_access","file_size":2524611}],"type":"journal_article","status":"public","date_updated":"2023-12-13T14:47:25Z","oa":1,"issue":"6","article_processing_charge":"No","title":"Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement","isi":1,"intvolume":"       107","scopus_import":"1","has_accepted_license":"1","language":[{"iso":"eng"}],"publication":"Physical Review A","publication_status":"published","ddc":["530"],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"external_id":{"arxiv":["2209.01159"],"isi":["001016927100012"]},"abstract":[{"text":"The quantum approximate optimization algorithm (QAOA) is a variational quantum algorithm, where a quantum computer implements a variational ansatz consisting of p layers of alternating unitary operators and a classical computer is used to optimize the variational parameters. For a random initialization, the optimization typically leads to local minima with poor performance, motivating the search for initialization strategies of QAOA variational parameters. Although numerous heuristic initializations exist, an analytical understanding and performance guarantees for large p remain evasive.We introduce a greedy initialization of QAOA which guarantees improving performance with an increasing number of layers. Our main result is an analytic construction of 2p + 1 transition states—saddle points with a unique negative curvature direction—for QAOA with p + 1 layers that use the local minimum of QAOA with p layers. Transition states connect to new local minima, which are guaranteed to lower the energy compared to the minimum found for p layers. We use the GREEDY procedure to navigate the exponentially increasing with p number of local minima resulting from the recursive application of our analytic construction. The performance of the GREEDY procedure matches available initialization strategies while providing a guarantee for the minimal energy to decrease with an increasing number of layers p. ","lang":"eng"}],"project":[{"grant_number":"850899","_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","call_identifier":"H2020","name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control"}],"publisher":"American Physical Society","date_published":"2023-06-02T00:00:00Z","department":[{"_id":"MaSe"}],"volume":107,"quality_controlled":"1","acknowledgement":"We thank V. Verteletskyi for a joint collaboration on numerical studies of the QAOA during his internship at ISTA that inspired analytic results on TS reported in this work. We acknowledge A. A. Mele and M. Brooks for discussions and D. Egger, P. Love, and D. Wierichs for valuable feedback on the manuscript. S.H.S., R.A.M., and M.S. acknowledge support by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899). R.K. is supported by the SFB BeyondC (Grant No. F7107-N38) and the project QuantumReady (FFG 896217). ","year":"2023","citation":{"apa":"Sack, S., Medina Ramos, R. A., Kueng, R., &#38; Serbyn, M. (2023). Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement. <i>Physical Review A</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physreva.107.062404\">https://doi.org/10.1103/physreva.107.062404</a>","mla":"Sack, Stefan, et al. “Recursive Greedy Initialization of the Quantum Approximate Optimization Algorithm with Guaranteed Improvement.” <i>Physical Review A</i>, vol. 107, no. 6, 062404, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/physreva.107.062404\">10.1103/physreva.107.062404</a>.","chicago":"Sack, Stefan, Raimel A Medina Ramos, Richard Kueng, and Maksym Serbyn. “Recursive Greedy Initialization of the Quantum Approximate Optimization Algorithm with Guaranteed Improvement.” <i>Physical Review A</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/physreva.107.062404\">https://doi.org/10.1103/physreva.107.062404</a>.","ista":"Sack S, Medina Ramos RA, Kueng R, Serbyn M. 2023. Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement. Physical Review A. 107(6), 062404.","short":"S. Sack, R.A. Medina Ramos, R. Kueng, M. Serbyn, Physical Review A 107 (2023).","ieee":"S. Sack, R. A. Medina Ramos, R. Kueng, and M. Serbyn, “Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement,” <i>Physical Review A</i>, vol. 107, no. 6. American Physical Society, 2023.","ama":"Sack S, Medina Ramos RA, Kueng R, Serbyn M. Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement. <i>Physical Review A</i>. 2023;107(6). doi:<a href=\"https://doi.org/10.1103/physreva.107.062404\">10.1103/physreva.107.062404</a>"},"date_created":"2023-06-07T06:57:32Z","ec_funded":1,"related_material":{"record":[{"id":"14622","relation":"dissertation_contains","status":"public"}]},"article_number":"062404","file_date_updated":"2023-06-13T07:28:36Z","_id":"13125","article_type":"original","doi":"10.1103/physreva.107.062404"},{"doi":"10.21468/scipostphyscore.6.2.029","file_date_updated":"2023-07-31T09:02:27Z","_id":"13277","article_type":"original","ec_funded":1,"article_number":"029","acknowledgement":"S. De Nicola acknowledges funding from the Institute of Science and Technology Austria (ISTA), and from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 754411. S. De Nicola also acknowledges funding from the EPSRC Center for Doctoral Training in Cross-Disciplinary Approaches to NonEquilibrium Systems (CANES) under Grant EP/L015854/1. ","year":"2023","date_created":"2023-07-24T10:47:46Z","citation":{"apa":"Tucci, G., De Nicola, S., Wald, S., &#38; Gambassi, A. (2023). Stochastic representation of the quantum quartic oscillator. <i>SciPost Physics Core</i>. SciPost Foundation. <a href=\"https://doi.org/10.21468/scipostphyscore.6.2.029\">https://doi.org/10.21468/scipostphyscore.6.2.029</a>","ama":"Tucci G, De Nicola S, Wald S, Gambassi A. Stochastic representation of the quantum quartic oscillator. <i>SciPost Physics Core</i>. 2023;6(2). doi:<a href=\"https://doi.org/10.21468/scipostphyscore.6.2.029\">10.21468/scipostphyscore.6.2.029</a>","ieee":"G. Tucci, S. De Nicola, S. Wald, and A. Gambassi, “Stochastic representation of the quantum quartic oscillator,” <i>SciPost Physics Core</i>, vol. 6, no. 2. SciPost Foundation, 2023.","short":"G. Tucci, S. De Nicola, S. Wald, A. Gambassi, SciPost Physics Core 6 (2023).","mla":"Tucci, Gennaro, et al. “Stochastic Representation of the Quantum Quartic Oscillator.” <i>SciPost Physics Core</i>, vol. 6, no. 2, 029, SciPost Foundation, 2023, doi:<a href=\"https://doi.org/10.21468/scipostphyscore.6.2.029\">10.21468/scipostphyscore.6.2.029</a>.","ista":"Tucci G, De Nicola S, Wald S, Gambassi A. 2023. Stochastic representation of the quantum quartic oscillator. SciPost Physics Core. 6(2), 029.","chicago":"Tucci, Gennaro, Stefano De Nicola, Sascha Wald, and Andrea Gambassi. “Stochastic Representation of the Quantum Quartic Oscillator.” <i>SciPost Physics Core</i>. SciPost Foundation, 2023. <a href=\"https://doi.org/10.21468/scipostphyscore.6.2.029\">https://doi.org/10.21468/scipostphyscore.6.2.029</a>."},"keyword":["Statistical and Nonlinear Physics","Atomic and Molecular Physics","and Optics","Nuclear and High Energy Physics","Condensed Matter Physics"],"publisher":"SciPost Foundation","date_published":"2023-04-14T00:00:00Z","department":[{"_id":"MaSe"}],"volume":6,"quality_controlled":"1","project":[{"_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"}],"ddc":["530"],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"external_id":{"arxiv":["2211.01923"]},"abstract":[{"lang":"eng","text":"Recent experimental advances have inspired the development of theoretical tools to describe the non-equilibrium dynamics of quantum systems. Among them an exact representation of quantum spin systems in terms of classical stochastic processes has been proposed. Here we provide first steps towards the extension of this stochastic approach to bosonic systems by considering the one-dimensional quantum quartic oscillator. We show how to exactly parameterize the time evolution of this prototypical model via the dynamics of a set of classical variables. We interpret these variables as stochastic processes, which allows us to propose a novel way to numerically simulate the time evolution of the system. We benchmark our findings by considering analytically solvable limits and providing alternative derivations of known results."}],"publication_status":"published","publication":"SciPost Physics Core","language":[{"iso":"eng"}],"has_accepted_license":"1","intvolume":"         6","oa":1,"date_updated":"2023-07-31T09:03:28Z","article_processing_charge":"No","issue":"2","title":"Stochastic representation of the quantum quartic oscillator","type":"journal_article","status":"public","publication_identifier":{"issn":["2666-9366"]},"month":"04","oa_version":"Published Version","day":"14","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file":[{"success":1,"checksum":"b472bc82108747eda5d52adf9e2ac7f3","file_id":"13329","file_name":"2023_SciPostPhysCore_Tucci.pdf","date_created":"2023-07-31T09:02:27Z","date_updated":"2023-07-31T09:02:27Z","creator":"dernst","access_level":"open_access","relation":"main_file","file_size":523236,"content_type":"application/pdf"}],"author":[{"first_name":"Gennaro","full_name":"Tucci, Gennaro","last_name":"Tucci"},{"first_name":"Stefano","full_name":"De Nicola, Stefano","last_name":"De Nicola","id":"42832B76-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-4842-6671"},{"full_name":"Wald, Sascha","first_name":"Sascha","last_name":"Wald"},{"last_name":"Gambassi","first_name":"Andrea","full_name":"Gambassi, Andrea"}],"arxiv":1},{"publication":"Physical Review B","language":[{"iso":"eng"}],"intvolume":"       108","scopus_import":"1","has_accepted_license":"1","title":"Many-body localization proximity effect in a two-species bosonic Hubbard model","oa":1,"date_updated":"2023-08-07T09:51:39Z","article_processing_charge":"Yes (in subscription journal)","issue":"5","type":"journal_article","status":"public","day":"01","oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file":[{"content_type":"application/pdf","access_level":"open_access","relation":"main_file","file_size":3051398,"creator":"dernst","date_updated":"2023-08-07T09:48:08Z","date_created":"2023-08-07T09:48:08Z","file_name":"2023_PhysRevB_Brighi.pdf","checksum":"f763000339b5fd543c14377109920690","file_id":"13981","success":1}],"month":"08","publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"author":[{"orcid":"0000-0002-7969-2729","last_name":"Brighi","id":"4115AF5C-F248-11E8-B48F-1D18A9856A87","first_name":"Pietro","full_name":"Brighi, Pietro"},{"full_name":"Ljubotina, Marko","first_name":"Marko","last_name":"Ljubotina","id":"F75EE9BE-5C90-11EA-905D-16643DDC885E"},{"first_name":"Dmitry A.","full_name":"Abanin, Dmitry A.","last_name":"Abanin"},{"last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2399-5827","first_name":"Maksym","full_name":"Serbyn, Maksym"}],"arxiv":1,"doi":"10.1103/physrevb.108.054201","file_date_updated":"2023-08-07T09:48:08Z","_id":"13963","article_type":"original","ec_funded":1,"article_number":"054201","citation":{"ista":"Brighi P, Ljubotina M, Abanin DA, Serbyn M. 2023. Many-body localization proximity effect in a two-species bosonic Hubbard model. Physical Review B. 108(5), 054201.","mla":"Brighi, Pietro, et al. “Many-Body Localization Proximity Effect in a Two-Species Bosonic Hubbard Model.” <i>Physical Review B</i>, vol. 108, no. 5, 054201, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/physrevb.108.054201\">10.1103/physrevb.108.054201</a>.","chicago":"Brighi, Pietro, Marko Ljubotina, Dmitry A. Abanin, and Maksym Serbyn. “Many-Body Localization Proximity Effect in a Two-Species Bosonic Hubbard Model.” <i>Physical Review B</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/physrevb.108.054201\">https://doi.org/10.1103/physrevb.108.054201</a>.","short":"P. Brighi, M. Ljubotina, D.A. Abanin, M. Serbyn, Physical Review B 108 (2023).","ama":"Brighi P, Ljubotina M, Abanin DA, Serbyn M. Many-body localization proximity effect in a two-species bosonic Hubbard model. <i>Physical Review B</i>. 2023;108(5). doi:<a href=\"https://doi.org/10.1103/physrevb.108.054201\">10.1103/physrevb.108.054201</a>","ieee":"P. Brighi, M. Ljubotina, D. A. Abanin, and M. Serbyn, “Many-body localization proximity effect in a two-species bosonic Hubbard model,” <i>Physical Review B</i>, vol. 108, no. 5. American Physical Society, 2023.","apa":"Brighi, P., Ljubotina, M., Abanin, D. A., &#38; Serbyn, M. (2023). Many-body localization proximity effect in a two-species bosonic Hubbard model. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevb.108.054201\">https://doi.org/10.1103/physrevb.108.054201</a>"},"date_created":"2023-08-05T18:25:22Z","acknowledgement":"We thank A. A. Michailidis and A. Mirlin for insightful discussions. P.B., M.L., and M.S. acknowledge support by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899). D.A. was\r\nsupported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 864597) and by the Swiss National Science Foundation. P.B., M.L., and M.S. acknowledge PRACE for awarding us access to Joliot-Curie at GENCI@CEA, France, where the TEBD simulations were performed. The TEBD simulations were performed using the ITensor library [60].","year":"2023","department":[{"_id":"MaSe"}],"volume":108,"quality_controlled":"1","publisher":"American Physical Society","date_published":"2023-08-01T00:00:00Z","project":[{"_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","grant_number":"850899","name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","call_identifier":"H2020"}],"external_id":{"arxiv":["2303.16876"]},"abstract":[{"text":"The many-body localization (MBL) proximity effect is an intriguing phenomenon where a thermal bath localizes due to the interaction with a disordered system. The interplay of thermal and nonergodic behavior in these systems gives rise to a rich phase diagram, whose exploration is an active field of research. In this paper, we study a bosonic Hubbard model featuring two particle species representing the bath and the disordered system. Using state-of-the-art numerical techniques, we investigate the dynamics of the model in different regimes, based on which we obtain a tentative phase diagram as a function of coupling strength and bath size. When the bath is composed of a single particle, we observe clear signatures of a transition from an MBL proximity effect to a delocalized phase. Increasing the bath size, however, its thermalizing effect becomes stronger and eventually the whole system delocalizes in the range of moderate interaction strengths studied. In this regime, we characterize particle transport, revealing diffusive behavior of the originally localized bosons.","lang":"eng"}],"ddc":["530"],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"publication_status":"published"},{"date_created":"2023-09-12T07:12:12Z","citation":{"ama":"Henderson PM, Ghazaryan A, Zibrov AA, Young AF, Serbyn M. Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene. <i>Physical Review B</i>. 2023;108(12). doi:<a href=\"https://doi.org/10.1103/physrevb.108.125411\">10.1103/physrevb.108.125411</a>","ieee":"P. M. Henderson, A. Ghazaryan, A. A. Zibrov, A. F. Young, and M. Serbyn, “Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene,” <i>Physical Review B</i>, vol. 108, no. 12. American Physical Society, 2023.","short":"P.M. Henderson, A. Ghazaryan, A.A. Zibrov, A.F. Young, M. Serbyn, Physical Review B 108 (2023).","mla":"Henderson, Paul M., et al. “Deep Learning Extraction of Band Structure Parameters from Density of States: A Case Study on Trilayer Graphene.” <i>Physical Review B</i>, vol. 108, no. 12, 125411, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/physrevb.108.125411\">10.1103/physrevb.108.125411</a>.","ista":"Henderson PM, Ghazaryan A, Zibrov AA, Young AF, Serbyn M. 2023. Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene. Physical Review B. 108(12), 125411.","chicago":"Henderson, Paul M, Areg Ghazaryan, Alexander A. Zibrov, Andrea F. Young, and Maksym Serbyn. “Deep Learning Extraction of Band Structure Parameters from Density of States: A Case Study on Trilayer Graphene.” <i>Physical Review B</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/physrevb.108.125411\">https://doi.org/10.1103/physrevb.108.125411</a>.","apa":"Henderson, P. M., Ghazaryan, A., Zibrov, A. A., Young, A. F., &#38; Serbyn, M. (2023). Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevb.108.125411\">https://doi.org/10.1103/physrevb.108.125411</a>"},"acknowledgement":"A.F.Y. acknowledges primary support from the Department of Energy under award DE-SC0020043, and additional support from the Gordon and Betty Moore Foundation under award GBMF9471 for group operations.","year":"2023","article_number":"125411","_id":"14320","article_type":"original","doi":"10.1103/physrevb.108.125411","publication_status":"published","external_id":{"arxiv":["2210.06310"]},"abstract":[{"text":"The development of two-dimensional materials has resulted in a diverse range of novel, high-quality compounds with increasing complexity. A key requirement for a comprehensive quantitative theory is the accurate determination of these materials' band structure parameters. However, this task is challenging due to the intricate band structures and the indirect nature of experimental probes. In this work, we introduce a general framework to derive band structure parameters from experimental data using deep neural networks. We applied our method to the penetration field capacitance measurement of trilayer graphene, an effective probe of its density of states. First, we demonstrate that a trained deep network gives accurate predictions for the penetration field capacitance as a function of tight-binding parameters. Next, we use the fast and accurate predictions from the trained network to automatically determine tight-binding parameters directly from experimental data, with extracted parameters being in a good agreement with values in the literature. We conclude by discussing potential applications of our method to other materials and experimental techniques beyond penetration field capacitance.","lang":"eng"}],"department":[{"_id":"MaSe"},{"_id":"ChLa"},{"_id":"MiLe"}],"quality_controlled":"1","volume":108,"publisher":"American Physical Society","date_published":"2023-09-15T00:00:00Z","title":"Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene","date_updated":"2023-09-20T09:38:24Z","oa":1,"article_processing_charge":"No","issue":"12","scopus_import":"1","intvolume":"       108","language":[{"iso":"eng"}],"publication":"Physical Review B","author":[{"orcid":"0000-0002-5198-7445","id":"13C09E74-18D9-11E9-8878-32CFE5697425","last_name":"Henderson","first_name":"Paul M","full_name":"Henderson, Paul M"},{"last_name":"Ghazaryan","id":"4AF46FD6-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9666-3543","full_name":"Ghazaryan, Areg","first_name":"Areg"},{"full_name":"Zibrov, Alexander A.","first_name":"Alexander A.","last_name":"Zibrov"},{"last_name":"Young","first_name":"Andrea F.","full_name":"Young, Andrea F."},{"first_name":"Maksym","full_name":"Serbyn, Maksym","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","last_name":"Serbyn","orcid":"0000-0002-2399-5827"}],"arxiv":1,"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2210.06310"}],"day":"15","oa_version":"Preprint","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"month":"09","type":"journal_article","status":"public"},{"has_accepted_license":"1","intvolume":"        15","article_processing_charge":"No","issue":"3","oa":1,"date_updated":"2023-09-20T10:46:29Z","title":"Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models","publication":"SciPost Physics","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2542-4653"]},"month":"09","file":[{"creator":"dernst","relation":"main_file","access_level":"open_access","content_type":"application/pdf","file_size":4866506,"file_id":"14350","checksum":"4cef6a8021f6b6c47ab2f2f2b1387ac2","file_name":"2023_SciPostPhysics_Brighi.pdf","success":1,"date_updated":"2023-09-20T10:46:10Z","date_created":"2023-09-20T10:46:10Z"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"Published Version","day":"13","arxiv":1,"author":[{"orcid":"0000-0002-7969-2729","last_name":"Brighi","id":"4115AF5C-F248-11E8-B48F-1D18A9856A87","first_name":"Pietro","full_name":"Brighi, Pietro"},{"full_name":"Ljubotina, Marko","first_name":"Marko","id":"F75EE9BE-5C90-11EA-905D-16643DDC885E","last_name":"Ljubotina","orcid":"0000-0003-0038-7068"},{"orcid":"0000-0002-2399-5827","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","last_name":"Serbyn","first_name":"Maksym","full_name":"Serbyn, Maksym"}],"status":"public","type":"journal_article","article_number":"093","related_material":{"record":[{"status":"public","relation":"earlier_version","id":"12750"}]},"ec_funded":1,"year":"2023","acknowledgement":"We would like to thank Raimel A. Medina, Hansveer Singh, and Dmitry Abanin for useful\r\ndiscussions.The authors acknowledge support by the European Research Council\r\n(ERC) under the European Union’s Horizon 2020 research and innovation program (Grant\r\nAgreement No. 850899). We acknowledge support by the Erwin Schrödinger International\r\nInstitute for Mathematics and Physics (ESI).","keyword":["General Physics and Astronomy"],"date_created":"2023-09-14T13:08:23Z","citation":{"apa":"Brighi, P., Ljubotina, M., &#38; Serbyn, M. (2023). Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. <i>SciPost Physics</i>. SciPost Foundation. <a href=\"https://doi.org/10.21468/scipostphys.15.3.093\">https://doi.org/10.21468/scipostphys.15.3.093</a>","short":"P. Brighi, M. Ljubotina, M. Serbyn, SciPost Physics 15 (2023).","ama":"Brighi P, Ljubotina M, Serbyn M. Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. <i>SciPost Physics</i>. 2023;15(3). doi:<a href=\"https://doi.org/10.21468/scipostphys.15.3.093\">10.21468/scipostphys.15.3.093</a>","ieee":"P. Brighi, M. Ljubotina, and M. Serbyn, “Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models,” <i>SciPost Physics</i>, vol. 15, no. 3. SciPost Foundation, 2023.","mla":"Brighi, Pietro, et al. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving Quantum East Models.” <i>SciPost Physics</i>, vol. 15, no. 3, 093, SciPost Foundation, 2023, doi:<a href=\"https://doi.org/10.21468/scipostphys.15.3.093\">10.21468/scipostphys.15.3.093</a>.","ista":"Brighi P, Ljubotina M, Serbyn M. 2023. Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. SciPost Physics. 15(3), 093.","chicago":"Brighi, Pietro, Marko Ljubotina, and Maksym Serbyn. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving Quantum East Models.” <i>SciPost Physics</i>. SciPost Foundation, 2023. <a href=\"https://doi.org/10.21468/scipostphys.15.3.093\">https://doi.org/10.21468/scipostphys.15.3.093</a>."},"doi":"10.21468/scipostphys.15.3.093","article_type":"original","_id":"14334","file_date_updated":"2023-09-20T10:46:10Z","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"ddc":["530"],"abstract":[{"lang":"eng","text":"Quantum kinetically constrained models have recently attracted significant attention due to their anomalous dynamics and thermalization. In this work, we introduce a hitherto unexplored family of kinetically constrained models featuring conserved particle number and strong inversion-symmetry breaking due to facilitated hopping. We demonstrate that these models provide a generic example of so-called quantum Hilbert space fragmentation, that is manifested in disconnected sectors in the Hilbert space that are not apparent in the computational basis. Quantum Hilbert space fragmentation leads to an exponential in system size number of eigenstates with exactly zero entanglement entropy across several bipartite cuts. These eigenstates can be probed dynamically using quenches from simple initial product states. In addition, we study the particle spreading under unitary dynamics launched from the domain wall state, and find faster than diffusive dynamics at high particle densities, that crosses over into logarithmically slow relaxation at smaller densities. Using a classically simulable cellular automaton, we reproduce the logarithmic dynamics observed in the quantum case. Our work suggests that particle conserving constrained models with inversion symmetry breaking realize so far unexplored dynamical behavior and invite their further theoretical and experimental studies."}],"external_id":{"arxiv":["2210.15607"]},"publication_status":"published","date_published":"2023-09-13T00:00:00Z","publisher":"SciPost Foundation","quality_controlled":"1","volume":15,"department":[{"_id":"MaSe"}],"project":[{"name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","call_identifier":"H2020","_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","grant_number":"850899"}]},{"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2306.09455"}],"oa_version":"Preprint","day":"01","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"month":"09","author":[{"full_name":"Babkin, Serafim","first_name":"Serafim","last_name":"Babkin","id":"41e64307-6672-11ee-b9ad-cc7a0075a479","orcid":"0009-0003-7382-8036"},{"last_name":"Karcher","full_name":"Karcher, Jonas F.","first_name":"Jonas F."},{"last_name":"Burmistrov","full_name":"Burmistrov, Igor S.","first_name":"Igor S."},{"last_name":"Mirlin","full_name":"Mirlin, Alexander D.","first_name":"Alexander D."}],"arxiv":1,"status":"public","type":"journal_article","intvolume":"       108","scopus_import":"1","title":"Generalized surface multifractality in two-dimensional disordered systems","oa":1,"date_updated":"2023-10-09T07:09:30Z","issue":"10","article_processing_charge":"No","publication":"Physical Review B","language":[{"iso":"eng"}],"external_id":{"arxiv":["2306.09455"]},"abstract":[{"lang":"eng","text":"Recently, a concept of generalized multifractality, which characterizes fluctuations and correlations of critical eigenstates, was introduced and explored for all 10 symmetry classes of disordered systems. Here, by using the nonlinear sigma-model (\r\nNL\r\nσ\r\nM\r\n) field theory, we extend the theory of generalized multifractality to boundaries of systems at criticality. Our numerical simulations on two-dimensional systems of symmetry classes A, C, and AII fully confirm the analytical predictions of pure-scaling observables and Weyl symmetry relations between critical exponents of surface generalized multifractality. This demonstrates the validity of the \r\nNL\r\nσ\r\nM\r\n for the description of Anderson-localization critical phenomena, not only in the bulk but also on the boundary. The critical exponents strongly violate generalized parabolicity, in analogy with earlier results for the bulk, corroborating the conclusion that the considered Anderson-localization critical points are not described by conformal field theories. We further derive relations between generalized surface multifractal spectra and linear combinations of Lyapunov exponents of a strip in quasi-one-dimensional geometry, which hold under the assumption of invariance with respect to a logarithmic conformal map. Our numerics demonstrate that these relations hold with an excellent accuracy. Taken together, our results indicate an intriguing situation: the conformal invariance is broken but holds partially at critical points of Anderson localization."}],"publication_status":"published","department":[{"_id":"MaSe"}],"volume":108,"quality_controlled":"1","publisher":"American Physical Society","date_published":"2023-09-01T00:00:00Z","article_number":"104205","citation":{"short":"S. Babkin, J.F. Karcher, I.S. Burmistrov, A.D. Mirlin, Physical Review B 108 (2023).","ama":"Babkin S, Karcher JF, Burmistrov IS, Mirlin AD. Generalized surface multifractality in two-dimensional disordered systems. <i>Physical Review B</i>. 2023;108(10). doi:<a href=\"https://doi.org/10.1103/PhysRevB.108.104205\">10.1103/PhysRevB.108.104205</a>","ieee":"S. Babkin, J. F. Karcher, I. S. Burmistrov, and A. D. Mirlin, “Generalized surface multifractality in two-dimensional disordered systems,” <i>Physical Review B</i>, vol. 108, no. 10. American Physical Society, 2023.","ista":"Babkin S, Karcher JF, Burmistrov IS, Mirlin AD. 2023. Generalized surface multifractality in two-dimensional disordered systems. Physical Review B. 108(10), 104205.","chicago":"Babkin, Serafim, Jonas F. Karcher, Igor S. Burmistrov, and Alexander D. Mirlin. “Generalized Surface Multifractality in Two-Dimensional Disordered Systems.” <i>Physical Review B</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/PhysRevB.108.104205\">https://doi.org/10.1103/PhysRevB.108.104205</a>.","mla":"Babkin, Serafim, et al. “Generalized Surface Multifractality in Two-Dimensional Disordered Systems.” <i>Physical Review B</i>, vol. 108, no. 10, 104205, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/PhysRevB.108.104205\">10.1103/PhysRevB.108.104205</a>.","apa":"Babkin, S., Karcher, J. F., Burmistrov, I. S., &#38; Mirlin, A. D. (2023). Generalized surface multifractality in two-dimensional disordered systems. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.108.104205\">https://doi.org/10.1103/PhysRevB.108.104205</a>"},"date_created":"2023-10-08T22:01:17Z","acknowledgement":"We thank Ilya Gruzberg for many illuminating discussions. S.S.B., J.F.K., and A.D.M. acknowledge support by the Deutsche Forschungsgemeinschaft (DFG) via the Grant\r\nNo. MI 658/14-1. I.S.B. acknowledges support from Russian Science Foundation (Grant No. 22-42-04416).","year":"2023","doi":"10.1103/PhysRevB.108.104205","_id":"14406","article_type":"original"},{"ddc":["530"],"tmp":{"image":"/images/cc_by_nc_sa.png","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)"},"publication_status":"published","publisher":"Institute of Science and Technology Austria","supervisor":[{"full_name":"Serbyn, Maksym","first_name":"Maksym","orcid":"0000-0002-2399-5827","last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87"}],"date_published":"2023-11-30T00:00:00Z","page":"142","department":[{"_id":"GradSch"},{"_id":"MaSe"}],"project":[{"name":"Quantum_Quantum Circuits and Software_Variational quantum algorithms on NISQ devices","_id":"bd660c93-d553-11ed-ba76-fb0fb6f49c0d"},{"call_identifier":"H2020","name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","grant_number":"850899"}],"ec_funded":1,"degree_awarded":"PhD","related_material":{"record":[{"id":"11471","relation":"part_of_dissertation","status":"public"},{"status":"public","id":"13125","relation":"part_of_dissertation"},{"id":"9760","relation":"part_of_dissertation","status":"public"}]},"year":"2023","date_created":"2023-11-28T10:58:13Z","citation":{"chicago":"Sack, Stefan. “Improving Variational Quantum Algorithms: Innovative Initialization Techniques and Extensions to Qudit Systems.” Institute of Science and Technology Austria, 2023. <a href=\"https://doi.org/10.15479/at:ista:14622\">https://doi.org/10.15479/at:ista:14622</a>.","mla":"Sack, Stefan. <i>Improving Variational Quantum Algorithms: Innovative Initialization Techniques and Extensions to Qudit Systems</i>. Institute of Science and Technology Austria, 2023, doi:<a href=\"https://doi.org/10.15479/at:ista:14622\">10.15479/at:ista:14622</a>.","ista":"Sack S. 2023. Improving variational quantum algorithms: Innovative initialization techniques and extensions to qudit systems. Institute of Science and Technology Austria.","ieee":"S. Sack, “Improving variational quantum algorithms: Innovative initialization techniques and extensions to qudit systems,” Institute of Science and Technology Austria, 2023.","ama":"Sack S. Improving variational quantum algorithms: Innovative initialization techniques and extensions to qudit systems. 2023. doi:<a href=\"https://doi.org/10.15479/at:ista:14622\">10.15479/at:ista:14622</a>","short":"S. Sack, Improving Variational Quantum Algorithms: Innovative Initialization Techniques and Extensions to Qudit Systems, Institute of Science and Technology Austria, 2023.","apa":"Sack, S. (2023). <i>Improving variational quantum algorithms: Innovative initialization techniques and extensions to qudit systems</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:14622\">https://doi.org/10.15479/at:ista:14622</a>"},"doi":"10.15479/at:ista:14622","file_date_updated":"2023-12-01T11:10:46Z","_id":"14622","publication_identifier":{"issn":["2663 - 337X"]},"month":"11","day":"30","oa_version":"Published Version","file":[{"file_id":"14635","checksum":"068fd3570506ec42b2faa390de784bc4","file_name":"PhD_Thesis.pdf","embargo":"2024-11-30","date_updated":"2023-12-01T11:10:46Z","date_created":"2023-11-30T15:53:10Z","embargo_to":"open_access","creator":"ssack","relation":"main_file","file_size":11947523,"content_type":"application/pdf","access_level":"closed"},{"content_type":"application/zip","file_size":18422964,"access_level":"closed","relation":"source_file","creator":"ssack","date_created":"2023-11-30T15:54:11Z","date_updated":"2023-12-01T11:10:46Z","file_name":"PhD Thesis (1).zip","checksum":"0fa3bc0d108aed0ac59d2c6beef2220a","file_id":"14636"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","author":[{"full_name":"Sack, Stefan","first_name":"Stefan","last_name":"Sack","id":"dd622248-f6e0-11ea-865d-ce382a1c81a5","orcid":"0000-0001-5400-8508"}],"alternative_title":["ISTA Thesis"],"type":"dissertation","status":"public","has_accepted_license":"1","date_updated":"2023-12-13T14:47:25Z","article_processing_charge":"No","title":"Improving variational quantum algorithms: Innovative initialization techniques and extensions to qudit systems","language":[{"iso":"eng"}]},{"type":"journal_article","status":"public","arxiv":1,"author":[{"full_name":"Babkin, Serafim","first_name":"Serafim","orcid":"0009-0003-7382-8036","id":"41e64307-6672-11ee-b9ad-cc7a0075a479","last_name":"Babkin"},{"first_name":"I","full_name":"Burmistrov, I","last_name":"Burmistrov"}],"month":"11","publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","main_file_link":[{"url":" https://doi.org/10.48550/arXiv.2308.16852","open_access":"1"}],"day":"15","oa_version":"Preprint","language":[{"iso":"eng"}],"publication":"Physical Review B","article_processing_charge":"No","issue":"20","oa":1,"date_updated":"2023-12-18T08:45:28Z","title":"Boundary multifractality in the spin quantum Hall symmetry class with interaction","intvolume":"       108","scopus_import":"1","date_published":"2023-11-15T00:00:00Z","publisher":"American Physical Society","volume":108,"quality_controlled":"1","department":[{"_id":"MaSe"}],"publication_status":"published","abstract":[{"text":"Generalized multifractality characterizes system size dependence of pure scaling local observables at Anderson transitions in all 10 symmetry classes of disordered systems. Recently, the concept of generalized multifractality has been extended to boundaries of critical disordered noninteracting systems. Here we study the generalized boundary multifractality in the presence of electron-electron interaction, focusing on the spin quantum Hall symmetry class (class C). Employing the two-loop renormalization group analysis within the Finkel'stein nonlinear sigma model, we compute the anomalous dimensions of the pure scaling operators located at the boundary of the system. We find that generalized boundary multifractal exponents are twice larger than their bulk counterparts. Exact symmetry relations between generalized boundary multifractal exponents in the case of noninteracting systems are explicitly broken by the interaction.","lang":"eng"}],"external_id":{"arxiv":["2308.16852"]},"_id":"14690","article_type":"original","doi":"10.1103/PhysRevB.108.205429","year":"2023","acknowledgement":"The authors are grateful to J. Karcher and A. Mirlin for collaboration on the related project. We thank I. Gruzberg and A. Mirlin for useful discussions and comments. I.S.B. is grateful to M. Parfenov and P. Ostrovsky for collaboration on the related project. The research was supported by Russian Science Foundation (Grant No. 22-42-04416).","date_created":"2023-12-17T23:00:53Z","citation":{"mla":"Babkin, Serafim, and I. Burmistrov. “Boundary Multifractality in the Spin Quantum Hall Symmetry Class with Interaction.” <i>Physical Review B</i>, vol. 108, no. 20, 205429, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/PhysRevB.108.205429\">10.1103/PhysRevB.108.205429</a>.","ista":"Babkin S, Burmistrov I. 2023. Boundary multifractality in the spin quantum Hall symmetry class with interaction. Physical Review B. 108(20), 205429.","chicago":"Babkin, Serafim, and I Burmistrov. “Boundary Multifractality in the Spin Quantum Hall Symmetry Class with Interaction.” <i>Physical Review B</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/PhysRevB.108.205429\">https://doi.org/10.1103/PhysRevB.108.205429</a>.","ieee":"S. Babkin and I. Burmistrov, “Boundary multifractality in the spin quantum Hall symmetry class with interaction,” <i>Physical Review B</i>, vol. 108, no. 20. American Physical Society, 2023.","ama":"Babkin S, Burmistrov I. Boundary multifractality in the spin quantum Hall symmetry class with interaction. <i>Physical Review B</i>. 2023;108(20). doi:<a href=\"https://doi.org/10.1103/PhysRevB.108.205429\">10.1103/PhysRevB.108.205429</a>","short":"S. Babkin, I. Burmistrov, Physical Review B 108 (2023).","apa":"Babkin, S., &#38; Burmistrov, I. (2023). Boundary multifractality in the spin quantum Hall symmetry class with interaction. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.108.205429\">https://doi.org/10.1103/PhysRevB.108.205429</a>"},"article_number":"205429"},{"article_number":"093138","keyword":["Applied Mathematics","General Physics and Astronomy","Mathematical Physics","Statistical and Nonlinear Physics"],"citation":{"ama":"Choueiri GH, Suri B, Merrin J, Serbyn M, Hof B, Budanur NB. Crises and chaotic scattering in hydrodynamic pilot-wave experiments. <i>Chaos: An Interdisciplinary Journal of Nonlinear Science</i>. 2022;32(9). doi:<a href=\"https://doi.org/10.1063/5.0102904\">10.1063/5.0102904</a>","ieee":"G. H. Choueiri, B. Suri, J. Merrin, M. Serbyn, B. Hof, and N. B. Budanur, “Crises and chaotic scattering in hydrodynamic pilot-wave experiments,” <i>Chaos: An Interdisciplinary Journal of Nonlinear Science</i>, vol. 32, no. 9. AIP Publishing, 2022.","short":"G.H. Choueiri, B. Suri, J. Merrin, M. Serbyn, B. Hof, N.B. Budanur, Chaos: An Interdisciplinary Journal of Nonlinear Science 32 (2022).","ista":"Choueiri GH, Suri B, Merrin J, Serbyn M, Hof B, Budanur NB. 2022. Crises and chaotic scattering in hydrodynamic pilot-wave experiments. Chaos: An Interdisciplinary Journal of Nonlinear Science. 32(9), 093138.","chicago":"Choueiri, George H, Balachandra Suri, Jack Merrin, Maksym Serbyn, Björn Hof, and Nazmi B Budanur. “Crises and Chaotic Scattering in Hydrodynamic Pilot-Wave Experiments.” <i>Chaos: An Interdisciplinary Journal of Nonlinear Science</i>. AIP Publishing, 2022. <a href=\"https://doi.org/10.1063/5.0102904\">https://doi.org/10.1063/5.0102904</a>.","mla":"Choueiri, George H., et al. “Crises and Chaotic Scattering in Hydrodynamic Pilot-Wave Experiments.” <i>Chaos: An Interdisciplinary Journal of Nonlinear Science</i>, vol. 32, no. 9, 093138, AIP Publishing, 2022, doi:<a href=\"https://doi.org/10.1063/5.0102904\">10.1063/5.0102904</a>.","apa":"Choueiri, G. H., Suri, B., Merrin, J., Serbyn, M., Hof, B., &#38; Budanur, N. B. (2022). Crises and chaotic scattering in hydrodynamic pilot-wave experiments. <i>Chaos: An Interdisciplinary Journal of Nonlinear Science</i>. AIP Publishing. <a href=\"https://doi.org/10.1063/5.0102904\">https://doi.org/10.1063/5.0102904</a>"},"date_created":"2023-01-16T09:58:16Z","year":"2022","acknowledgement":"This work was partially funded by the Institute of Science and Technology Austria Interdisciplinary Project Committee Grant “Pilot-Wave Hydrodynamics: Chaos and Quantum Analogies.”","doi":"10.1063/5.0102904","_id":"12259","article_type":"original","file_date_updated":"2023-01-30T09:41:12Z","abstract":[{"text":"Theoretical foundations of chaos have been predominantly laid out for finite-dimensional dynamical systems, such as the three-body problem in classical mechanics and the Lorenz model in dissipative systems. In contrast, many real-world chaotic phenomena, e.g., weather, arise in systems with many (formally infinite) degrees of freedom, which limits direct quantitative analysis of such systems using chaos theory. In the present work, we demonstrate that the hydrodynamic pilot-wave systems offer a bridge between low- and high-dimensional chaotic phenomena by allowing for a systematic study of how the former connects to the latter. Specifically, we present experimental results, which show the formation of low-dimensional chaotic attractors upon destabilization of regular dynamics and a final transition to high-dimensional chaos via the merging of distinct chaotic regions through a crisis bifurcation. Moreover, we show that the post-crisis dynamics of the system can be rationalized as consecutive scatterings from the nonattracting chaotic sets with lifetimes following exponential distributions. ","lang":"eng"}],"external_id":{"isi":["000861009600005"],"arxiv":["2206.01531"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"ddc":["530"],"publication_status":"published","volume":32,"quality_controlled":"1","department":[{"_id":"MaSe"},{"_id":"BjHo"},{"_id":"NanoFab"}],"date_published":"2022-09-26T00:00:00Z","publisher":"AIP Publishing","has_accepted_license":"1","scopus_import":"1","intvolume":"        32","isi":1,"title":"Crises and chaotic scattering in hydrodynamic pilot-wave experiments","issue":"9","article_processing_charge":"No","date_updated":"2023-08-04T09:51:17Z","oa":1,"publication":"Chaos: An Interdisciplinary Journal of Nonlinear Science","language":[{"iso":"eng"}],"file":[{"creator":"dernst","file_size":3209644,"access_level":"open_access","relation":"main_file","content_type":"application/pdf","file_id":"12445","file_name":"2022_Chaos_Choueiri.pdf","checksum":"17881eff8b21969359a2dd64620120ba","success":1,"date_updated":"2023-01-30T09:41:12Z","date_created":"2023-01-30T09:41:12Z"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","day":"26","oa_version":"Published Version","month":"09","publication_identifier":{"issn":["1054-1500"],"eissn":["1089-7682"]},"arxiv":1,"author":[{"first_name":"George H","full_name":"Choueiri, George H","id":"448BD5BC-F248-11E8-B48F-1D18A9856A87","last_name":"Choueiri"},{"last_name":"Suri","id":"47A5E706-F248-11E8-B48F-1D18A9856A87","first_name":"Balachandra","full_name":"Suri, Balachandra"},{"first_name":"Jack","full_name":"Merrin, Jack","orcid":"0000-0001-5145-4609","id":"4515C308-F248-11E8-B48F-1D18A9856A87","last_name":"Merrin"},{"orcid":"0000-0002-2399-5827","last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","first_name":"Maksym","full_name":"Serbyn, Maksym"},{"orcid":"0000-0003-2057-2754","id":"3A374330-F248-11E8-B48F-1D18A9856A87","last_name":"Hof","first_name":"Björn","full_name":"Hof, Björn"},{"id":"3EA1010E-F248-11E8-B48F-1D18A9856A87","last_name":"Budanur","orcid":"0000-0003-0423-5010","first_name":"Nazmi B","full_name":"Budanur, Nazmi B"}],"type":"journal_article","status":"public"},{"title":"Absence of thermalization of free systems coupled to gapped interacting reservoirs","date_updated":"2023-08-04T10:07:33Z","oa":1,"issue":"5","article_processing_charge":"No","intvolume":"       106","scopus_import":"1","isi":1,"language":[{"iso":"eng"}],"publication":"Physical Review B","author":[{"id":"F75EE9BE-5C90-11EA-905D-16643DDC885E","last_name":"Ljubotina","full_name":"Ljubotina, Marko","first_name":"Marko"},{"last_name":"Roy","first_name":"Dibyendu","full_name":"Roy, Dibyendu"},{"last_name":"Prosen","first_name":"Tomaž","full_name":"Prosen, Tomaž"}],"arxiv":1,"oa_version":"Preprint","day":"31","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2106.08373"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"month":"08","status":"public","type":"journal_article","citation":{"mla":"Ljubotina, Marko, et al. “Absence of Thermalization of Free Systems Coupled to Gapped Interacting Reservoirs.” <i>Physical Review B</i>, vol. 106, no. 5, 054314, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/physrevb.106.054314\">10.1103/physrevb.106.054314</a>.","ista":"Ljubotina M, Roy D, Prosen T. 2022. Absence of thermalization of free systems coupled to gapped interacting reservoirs. Physical Review B. 106(5), 054314.","chicago":"Ljubotina, Marko, Dibyendu Roy, and Tomaž Prosen. “Absence of Thermalization of Free Systems Coupled to Gapped Interacting Reservoirs.” <i>Physical Review B</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/physrevb.106.054314\">https://doi.org/10.1103/physrevb.106.054314</a>.","ama":"Ljubotina M, Roy D, Prosen T. Absence of thermalization of free systems coupled to gapped interacting reservoirs. <i>Physical Review B</i>. 2022;106(5). doi:<a href=\"https://doi.org/10.1103/physrevb.106.054314\">10.1103/physrevb.106.054314</a>","ieee":"M. Ljubotina, D. Roy, and T. Prosen, “Absence of thermalization of free systems coupled to gapped interacting reservoirs,” <i>Physical Review B</i>, vol. 106, no. 5. American Physical Society, 2022.","short":"M. Ljubotina, D. Roy, T. Prosen, Physical Review B 106 (2022).","apa":"Ljubotina, M., Roy, D., &#38; Prosen, T. (2022). Absence of thermalization of free systems coupled to gapped interacting reservoirs. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevb.106.054314\">https://doi.org/10.1103/physrevb.106.054314</a>"},"date_created":"2023-01-16T10:00:39Z","acknowledgement":"M.L. and T.P. acknowledge support from the European Research Council (ERC) through the advanced grant 694544 – OMNES and the grant P1-0402 of Slovenian Research Agency (ARRS). M.L. acknowledges support from the European Research Council (ERC) through the starting grant 850899 – NEQuM. D.R. acknowledges support from the Ministry of Electronics & Information Technology (MeitY), India under the grant for “Centre for Excellence in Quantum\r\nTechnologies” with Ref. No. 4(7)/2020-ITEA. ","year":"2022","ec_funded":1,"article_number":"054314","article_type":"original","_id":"12269","doi":"10.1103/physrevb.106.054314","publication_status":"published","external_id":{"arxiv":["2106.08373"],"isi":["000861332900005"]},"abstract":[{"text":"We study the thermalization of a small XX chain coupled to long, gapped XXZ leads at either side by observing the relaxation dynamics of the whole system. Using extensive tensor network simulations, we show that such systems, although not integrable, appear to show either extremely slow thermalization or even lack thereof since the two cannot be distinguished within the accuracy of our numerics. We show that the persistent oscillations observed in the spin current in the middle of the XX chain are related to eigenstates of the entire system located within the gap of the boundary chains. We find from exact diagonalization that some of these states remain strictly localized within the XX chain and do not hybridize with the rest of the system. The frequencies of the persistent oscillations determined by numerical simulations of dynamics match the energy differences between these states exactly. This has important implications for open systems, where the strongly interacting leads are often assumed to thermalize the central system. Our results suggest that, if we employ gapped systems for the leads, this assumption does not hold.","lang":"eng"}],"project":[{"_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","grant_number":"850899","name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","call_identifier":"H2020"}],"department":[{"_id":"MaSe"}],"quality_controlled":"1","volume":106,"publisher":"American Physical Society","date_published":"2022-08-31T00:00:00Z"},{"has_accepted_license":"1","intvolume":"         3","scopus_import":"1","article_processing_charge":"No","issue":"3","oa":1,"date_updated":"2023-01-30T11:05:23Z","title":"Optimal steering of matrix product states and quantum many-body scars","publication":"PRX Quantum","language":[{"iso":"eng"}],"month":"09","publication_identifier":{"eissn":["2691-3399"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file":[{"date_updated":"2023-01-30T11:02:50Z","date_created":"2023-01-30T11:02:50Z","checksum":"ef8f0a1b5a019b3958009162de0fa4c3","file_name":"2022_PRXQuantum_Ljubotina.pdf","file_id":"12457","success":1,"relation":"main_file","file_size":7661905,"content_type":"application/pdf","access_level":"open_access","creator":"dernst"}],"day":"23","oa_version":"Published Version","arxiv":1,"author":[{"id":"F75EE9BE-5C90-11EA-905D-16643DDC885E","last_name":"Ljubotina","first_name":"Marko","full_name":"Ljubotina, Marko"},{"first_name":"Barbara","full_name":"Roos, Barbara","orcid":"0000-0002-9071-5880","id":"5DA90512-D80F-11E9-8994-2E2EE6697425","last_name":"Roos"},{"last_name":"Abanin","full_name":"Abanin, Dmitry A.","first_name":"Dmitry A."},{"last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2399-5827","full_name":"Serbyn, Maksym","first_name":"Maksym"}],"type":"journal_article","status":"public","article_number":"030343","ec_funded":1,"year":"2022","acknowledgement":"We thank A. A. Michailidis for insightful discussions. M.L. and M.S. acknowledge support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 850899). D.A. is supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 864597) and by the Swiss National Science Foundation. The infinite TEBD simulations were performed using the ITensor library [67].","keyword":["General Medicine"],"date_created":"2023-01-16T10:01:56Z","citation":{"short":"M. Ljubotina, B. Roos, D.A. Abanin, M. Serbyn, PRX Quantum 3 (2022).","ieee":"M. Ljubotina, B. Roos, D. A. Abanin, and M. Serbyn, “Optimal steering of matrix product states and quantum many-body scars,” <i>PRX Quantum</i>, vol. 3, no. 3. American Physical Society, 2022.","ama":"Ljubotina M, Roos B, Abanin DA, Serbyn M. Optimal steering of matrix product states and quantum many-body scars. <i>PRX Quantum</i>. 2022;3(3). doi:<a href=\"https://doi.org/10.1103/prxquantum.3.030343\">10.1103/prxquantum.3.030343</a>","mla":"Ljubotina, Marko, et al. “Optimal Steering of Matrix Product States and Quantum Many-Body Scars.” <i>PRX Quantum</i>, vol. 3, no. 3, 030343, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/prxquantum.3.030343\">10.1103/prxquantum.3.030343</a>.","ista":"Ljubotina M, Roos B, Abanin DA, Serbyn M. 2022. Optimal steering of matrix product states and quantum many-body scars. PRX Quantum. 3(3), 030343.","chicago":"Ljubotina, Marko, Barbara Roos, Dmitry A. Abanin, and Maksym Serbyn. “Optimal Steering of Matrix Product States and Quantum Many-Body Scars.” <i>PRX Quantum</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/prxquantum.3.030343\">https://doi.org/10.1103/prxquantum.3.030343</a>.","apa":"Ljubotina, M., Roos, B., Abanin, D. A., &#38; Serbyn, M. (2022). Optimal steering of matrix product states and quantum many-body scars. <i>PRX Quantum</i>. American Physical Society. <a href=\"https://doi.org/10.1103/prxquantum.3.030343\">https://doi.org/10.1103/prxquantum.3.030343</a>"},"doi":"10.1103/prxquantum.3.030343","article_type":"original","_id":"12276","file_date_updated":"2023-01-30T11:02:50Z","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"ddc":["530"],"abstract":[{"text":"Ongoing development of quantum simulators allows for a progressively finer degree of control of quantum many-body systems. This motivates the development of efficient approaches to facilitate the control of such systems and enable the preparation of nontrivial quantum states. Here we formulate an approach to control quantum systems based on matrix product states (MPSs). We compare counterdiabatic and leakage minimization approaches to the so-called local steering problem that consists in finding the best value of the control parameters for generating a unitary evolution of the specific MPS in a given direction. In order to benchmark the different approaches, we apply them to the generalization of the PXP model known to exhibit coherent quantum dynamics due to quantum many-body scars. We find that the leakage-based approach generally outperforms the counterdiabatic framework and use it to construct a Floquet model with quantum scars. We perform the first steps towards global trajectory optimization and demonstrate entanglement steering capabilities in the generalized PXP model. Finally, we apply our leakage minimization approach to construct quantum scars in the periodically driven nonintegrable Ising model.","lang":"eng"}],"external_id":{"arxiv":["2204.02899"]},"publication_status":"published","date_published":"2022-09-23T00:00:00Z","publisher":"American Physical Society","volume":3,"quality_controlled":"1","department":[{"_id":"MaSe"},{"_id":"RoSe"}],"project":[{"_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","grant_number":"850899","name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","call_identifier":"H2020"}]},{"author":[{"id":"4115AF5C-F248-11E8-B48F-1D18A9856A87","last_name":"Brighi","orcid":"0000-0002-7969-2729","first_name":"Pietro","full_name":"Brighi, Pietro"},{"full_name":"Ljubotina, Marko","first_name":"Marko","last_name":"Ljubotina","id":"F75EE9BE-5C90-11EA-905D-16643DDC885E","orcid":"0000-0003-0038-7068"},{"full_name":"Serbyn, Maksym","first_name":"Maksym","orcid":"0000-0002-2399-5827","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","last_name":"Serbyn"}],"publication_status":"submitted","arxiv":1,"month":"11","tmp":{"image":"/images/cc_by_nc_sa.png","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)"},"day":"07","external_id":{"arxiv":["2210.15607"]},"main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2210.15607","open_access":"1"}],"oa_version":"Preprint","abstract":[{"text":"Quantum kinetically constrained models have recently attracted significant attention due to their anomalous dynamics and thermalization. In this work, we introduce a hitherto unexplored family of kinetically constrained models featuring a conserved particle number and strong inversion-symmetry breaking due to facilitated hopping. We demonstrate that these models provide a generic example of so-called quantum Hilbert space fragmentation, that is manifested in disconnected sectors in the Hilbert space that are not apparent in the computational basis. Quantum Hilbert space fragmentation leads to an exponential in system size number of eigenstates with exactly zero entanglement entropy across several bipartite cuts. These eigenstates can be probed dynamically using quenches from simple initial product states. In addition, we study the particle spreading under unitary dynamics launched from the domain wall state, and find faster than diffusive dynamics at high particle densities, that crosses over into logarithmically slow relaxation at smaller densities. Using a classically simulable cellular automaton, we reproduce the logarithmic dynamics observed in the quantum case. Our work suggests that particle conserving constrained models with inversion symmetry breaking realize so far unexplored universality classes of dynamics and invite their further theoretical and experimental studies.","lang":"eng"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_published":"2022-11-07T00:00:00Z","type":"preprint","status":"public","department":[{"_id":"GradSch"},{"_id":"MaSe"}],"date_updated":"2023-09-20T10:46:29Z","oa":1,"article_processing_charge":"No","year":"2022","citation":{"mla":"Brighi, Pietro, et al. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving Quantum East Models.” <i>ArXiv</i>, 2210.15607, doi:<a href=\"https://doi.org/10.48550/arXiv.2210.15607\">10.48550/arXiv.2210.15607</a>.","chicago":"Brighi, Pietro, Marko Ljubotina, and Maksym Serbyn. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving Quantum East Models.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/arXiv.2210.15607\">https://doi.org/10.48550/arXiv.2210.15607</a>.","ista":"Brighi P, Ljubotina M, Serbyn M. Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. arXiv, 2210.15607.","ama":"Brighi P, Ljubotina M, Serbyn M. Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/arXiv.2210.15607\">10.48550/arXiv.2210.15607</a>","ieee":"P. Brighi, M. Ljubotina, and M. Serbyn, “Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models,” <i>arXiv</i>. .","short":"P. Brighi, M. Ljubotina, M. Serbyn, ArXiv (n.d.).","apa":"Brighi, P., Ljubotina, M., &#38; Serbyn, M. (n.d.). Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/arXiv.2210.15607\">https://doi.org/10.48550/arXiv.2210.15607</a>"},"date_created":"2023-03-23T14:33:13Z","title":"Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models","related_material":{"record":[{"status":"public","relation":"dissertation_contains","id":"12732"},{"status":"public","relation":"later_version","id":"14334"}]},"article_number":"2210.15607","_id":"12750","language":[{"iso":"eng"}],"publication":"arXiv","doi":"10.48550/arXiv.2210.15607"},{"ddc":["530"],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"abstract":[{"lang":"eng","text":"studiamos aspectos de Teoría Cuántica de Campos a densidad finita usando técnicas y conceptos de información cuántica. Nos enfocamos en fermiones de Dirac masivos con potencial químico en 1+1 dimensiones espacio-temporales. Usando la entropía de entrelazamiento en un intervalo, construimos la función c entrópica que es finita. Esta función c no es monótona, e incorpora el entrelazamiento de largo alcance proveniente de la superficie de Fermi. Motivados por trabajos previos de modelos en la red, calculamos numéricamente las entropías de Renyi y encontramos oscilaciones de Friedel. Seguidamente, analizamos la información mutua como una medida de correlación entre diferentes regiones. Usando una expansión de distancia grande desarrollada por Cardy, argumentamos que la información mutua detecta las correlaciones inducidas por la superficie de Fermi todavía al orden dominante en la expansión. Finalmente, analizamos la entropía relativa y sus generalizaciones de Renyi para distinguir estados con diferente carga. Encontramos que estados en diferentes sectores de superselección dan origen a un comportamiento super-extensivo en la entropía relativa."}],"publication_status":"published","publisher":"Asociación Física Argentina","date_published":"2022-01-13T00:00:00Z","department":[{"_id":"MaSe"}],"page":"93-98","quality_controlled":"1","volume":32,"acknowledgement":"Se agradece a Horacio Casini por distintas discusiones y comentarios a lo largo del trabajo. LD cuenta con el apoyo de CNEA y UNCuyo, Inst. GT cuenta con el apoyo de CONICET,\r\nANPCyT, CNEA, y UNCuyo, Inst. Balseiro. RM cuenta con el apoyo de IST Austria. MS cuenta con el apoyode CONICET y UNCuyo, Inst. Balseiro. También se agradece a la Asociación Argentina de Física por la posibilidad de presentar este artículo en el marco de una Mención Especial por el Premio Luis Másperi 2020.","year":"2022","citation":{"apa":"Daguerre, L., Torroba, G., Medina Ramos, R. A., &#38; Solís, M. (2022). Non relativistic quantum field theory: Dynamics and irreversibility. <i>Anales de la Asociacion Fisica Argentina</i>. Asociación Física Argentina. <a href=\"https://doi.org/10.31527/analesafa.2021.32.4.93\">https://doi.org/10.31527/analesafa.2021.32.4.93</a>","mla":"Daguerre, L., et al. “Non relativistic quantum field theory: Dynamics and irreversibility.” <i>Anales de la Asociacion Fisica Argentina</i>, vol. 32, no. 4, Asociación Física Argentina, 2022, pp. 93–98, doi:<a href=\"https://doi.org/10.31527/analesafa.2021.32.4.93\">10.31527/analesafa.2021.32.4.93</a>.","ista":"Daguerre L, Torroba G, Medina Ramos RA, Solís M. 2022. Non relativistic quantum field theory: Dynamics and irreversibility. Anales de la Asociacion Fisica Argentina. 32(4), 93–98.","chicago":"Daguerre, L., G. Torroba, Raimel A Medina Ramos, and M. Solís. “Non relativistic quantum field theory: Dynamics and irreversibility.” <i>Anales de la Asociacion Fisica Argentina</i>. Asociación Física Argentina, 2022. <a href=\"https://doi.org/10.31527/analesafa.2021.32.4.93\">https://doi.org/10.31527/analesafa.2021.32.4.93</a>.","ieee":"L. Daguerre, G. Torroba, R. A. Medina Ramos, and M. Solís, “Non relativistic quantum field theory: Dynamics and irreversibility,” <i>Anales de la Asociacion Fisica Argentina</i>, vol. 32, no. 4. Asociación Física Argentina, pp. 93–98, 2022.","ama":"Daguerre L, Torroba G, Medina Ramos RA, Solís M. Non relativistic quantum field theory: Dynamics and irreversibility. <i>Anales de la Asociacion Fisica Argentina</i>. 2022;32(4):93-98. doi:<a href=\"https://doi.org/10.31527/analesafa.2021.32.4.93\">10.31527/analesafa.2021.32.4.93</a>","short":"L. Daguerre, G. Torroba, R.A. Medina Ramos, M. Solís, Anales de la Asociacion Fisica Argentina 32 (2022) 93–98."},"date_created":"2022-02-20T23:01:32Z","doi":"10.31527/analesafa.2021.32.4.93","file_date_updated":"2022-02-21T09:32:44Z","article_type":"original","_id":"10769","month":"01","publication_identifier":{"eissn":["18501168"]},"oa_version":"Published Version","day":"13","file":[{"content_type":"application/pdf","relation":"main_file","access_level":"open_access","file_size":4505751,"creator":"dernst","date_updated":"2022-02-21T09:32:44Z","date_created":"2022-02-21T09:32:44Z","file_name":"2022_AnalesAFA_Daguerre.pdf","checksum":"ca66a3017205677c5b4d22b3bb74fb0b","file_id":"10782","success":1}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"full_name":"Daguerre, L.","first_name":"L.","last_name":"Daguerre"},{"last_name":"Torroba","first_name":"G.","full_name":"Torroba, G."},{"last_name":"Medina Ramos","id":"CE680B90-D85A-11E9-B684-C920E6697425","first_name":"Raimel A","full_name":"Medina Ramos, Raimel A"},{"last_name":"Solís","full_name":"Solís, M.","first_name":"M."}],"status":"public","type":"journal_article","has_accepted_license":"1","intvolume":"        32","scopus_import":"1","date_updated":"2022-02-21T09:36:01Z","oa":1,"article_processing_charge":"No","issue":"4","title":"Non relativistic quantum field theory: Dynamics and irreversibility","publication":"Anales de la Asociacion Fisica Argentina","language":[{"iso":"spa"}]},{"project":[{"_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020"}],"publisher":"American Physical Society","date_published":"2022-03-11T00:00:00Z","department":[{"_id":"MaSe"},{"_id":"AnHi"}],"volume":128,"quality_controlled":"1","publication_status":"published","external_id":{"isi":["000771391100002"],"pmid":[" 35333085"],"arxiv":["2107.03695"]},"abstract":[{"lang":"eng","text":"Superconductor-semiconductor hybrid devices are at the heart of several proposed approaches to quantum information processing, but their basic properties remain to be understood. We embed a twodimensional Al-InAs hybrid system in a resonant microwave circuit, probing the breakdown of superconductivity due to an applied magnetic field. We find a fingerprint from the two-component nature of the hybrid system, and quantitatively compare with a theory that includes the contribution of intraband p±ip pairing in the InAs, as well as the emergence of Bogoliubov-Fermi surfaces due to magnetic field. Separately resolving the Al and InAs contributions allows us to determine the carrier density and mobility in the InAs."}],"_id":"10851","article_type":"original","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"doi":"10.1103/physrevlett.128.107701","acknowledgement":"M. S. acknowledges useful discussions with A. Levchenko and P. A. Lee, and E. Berg. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility. J. S. and A. G. acknowledge funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 754411.W. M. Hatefipour, W. M. Strickland and J. Shabani acknowledge funding from Office of Naval Research Award No. N00014-21-1-2450.","year":"2022","date_created":"2022-03-17T11:37:47Z","citation":{"mla":"Phan, Duc T., et al. “Detecting Induced P±ip Pairing at the Al-InAs Interface with a Quantum Microwave Circuit.” <i>Physical Review Letters</i>, vol. 128, no. 10, 107701, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/physrevlett.128.107701\">10.1103/physrevlett.128.107701</a>.","chicago":"Phan, Duc T, Jorden L Senior, Areg Ghazaryan, M. Hatefipour, W. M. Strickland, J. Shabani, Maksym Serbyn, and Andrew P Higginbotham. “Detecting Induced P±ip Pairing at the Al-InAs Interface with a Quantum Microwave Circuit.” <i>Physical Review Letters</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/physrevlett.128.107701\">https://doi.org/10.1103/physrevlett.128.107701</a>.","ista":"Phan DT, Senior JL, Ghazaryan A, Hatefipour M, Strickland WM, Shabani J, Serbyn M, Higginbotham AP. 2022. Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit. Physical Review Letters. 128(10), 107701.","short":"D.T. Phan, J.L. Senior, A. Ghazaryan, M. Hatefipour, W.M. Strickland, J. Shabani, M. Serbyn, A.P. Higginbotham, Physical Review Letters 128 (2022).","ama":"Phan DT, Senior JL, Ghazaryan A, et al. Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit. <i>Physical Review Letters</i>. 2022;128(10). doi:<a href=\"https://doi.org/10.1103/physrevlett.128.107701\">10.1103/physrevlett.128.107701</a>","ieee":"D. T. Phan <i>et al.</i>, “Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit,” <i>Physical Review Letters</i>, vol. 128, no. 10. American Physical Society, 2022.","apa":"Phan, D. T., Senior, J. L., Ghazaryan, A., Hatefipour, M., Strickland, W. M., Shabani, J., … Higginbotham, A. P. (2022). Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevlett.128.107701\">https://doi.org/10.1103/physrevlett.128.107701</a>"},"keyword":["General Physics and Astronomy"],"ec_funded":1,"article_number":"107701","related_material":{"record":[{"status":"public","id":"10029","relation":"earlier_version"},{"status":"public","id":"14547","relation":"dissertation_contains"}],"link":[{"description":"News on ISTA Website","url":"https://ista.ac.at/en/news/characterizing-super-semi-sandwiches-for-quantum-computing/","relation":"press_release"}]},"pmid":1,"type":"journal_article","status":"public","author":[{"id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","last_name":"Phan","full_name":"Phan, Duc T","first_name":"Duc T"},{"last_name":"Senior","id":"5479D234-2D30-11EA-89CC-40953DDC885E","orcid":"0000-0002-0672-9295","first_name":"Jorden L","full_name":"Senior, Jorden L"},{"orcid":"0000-0001-9666-3543","id":"4AF46FD6-F248-11E8-B48F-1D18A9856A87","last_name":"Ghazaryan","first_name":"Areg","full_name":"Ghazaryan, Areg"},{"full_name":"Hatefipour, M.","first_name":"M.","last_name":"Hatefipour"},{"last_name":"Strickland","first_name":"W. M.","full_name":"Strickland, W. M."},{"last_name":"Shabani","full_name":"Shabani, J.","first_name":"J."},{"first_name":"Maksym","full_name":"Serbyn, Maksym","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","last_name":"Serbyn","orcid":"0000-0002-2399-5827"},{"id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","last_name":"Higginbotham","orcid":"0000-0003-2607-2363","first_name":"Andrew P","full_name":"Higginbotham, Andrew P"}],"arxiv":1,"publication_identifier":{"issn":["0031-9007"],"eissn":["1079-7114"]},"month":"03","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2107.03695","open_access":"1"}],"day":"11","oa_version":"Preprint","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","language":[{"iso":"eng"}],"publication":"Physical Review Letters","date_updated":"2023-11-30T10:56:03Z","oa":1,"issue":"10","article_processing_charge":"No","title":"Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit","isi":1,"scopus_import":"1","intvolume":"       128"},{"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2101.08277"}],"day":"17","oa_version":"Preprint","month":"03","publication_identifier":{"issn":["2469-9969"]},"arxiv":1,"author":[{"first_name":"Margarita","full_name":"Davydova, Margarita","last_name":"Davydova"},{"first_name":"Maksym","full_name":"Serbyn, Maksym","orcid":"0000-0002-2399-5827","last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Ishizuka, Hiroaki","first_name":"Hiroaki","last_name":"Ishizuka"}],"type":"journal_article","status":"public","scopus_import":"1","intvolume":"       105","isi":1,"title":"Symmetry-allowed nonlinear orbital response across the topological phase transition in centrosymmetric materials","article_processing_charge":"No","oa":1,"date_updated":"2023-08-03T06:09:56Z","publication":"Physical Review B","language":[{"iso":"eng"}],"abstract":[{"text":"Nonlinear optical responses are commonly used as a probe for studying the electronic properties of materials. For topological materials, studies thus far focused on photogalvanic electric currents, which are forbidden in centrosymmetric materials because they require broken inversion symmetry. In this Letter, we propose a class of symmetry-allowed responses for inversion-symmetric topological insulators with two doubly degenerate bands. We consider a specific example of such a response, the orbital current, and show that the sign of the response reflects the Z2 topological index, i.e., the orbital current changes sign at the transition between trivial and topological insulator phases. This is illustrated in two models of topological insulators: the Bernevig-Hughes-Zhang model and the 1T′ phase of transition metal dichalcogenides.","lang":"eng"}],"external_id":{"isi":["000800752500001"],"arxiv":["2101.08277"]},"publication_status":"published","quality_controlled":"1","volume":105,"department":[{"_id":"MaSe"}],"date_published":"2022-03-17T00:00:00Z","publisher":"American Physical Society","article_number":"L121407","citation":{"apa":"Davydova, M., Serbyn, M., &#38; Ishizuka, H. (2022). Symmetry-allowed nonlinear orbital response across the topological phase transition in centrosymmetric materials. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.105.L121407\">https://doi.org/10.1103/PhysRevB.105.L121407</a>","short":"M. Davydova, M. Serbyn, H. Ishizuka, Physical Review B 105 (2022).","ama":"Davydova M, Serbyn M, Ishizuka H. Symmetry-allowed nonlinear orbital response across the topological phase transition in centrosymmetric materials. <i>Physical Review B</i>. 2022;105. doi:<a href=\"https://doi.org/10.1103/PhysRevB.105.L121407\">10.1103/PhysRevB.105.L121407</a>","ieee":"M. Davydova, M. Serbyn, and H. Ishizuka, “Symmetry-allowed nonlinear orbital response across the topological phase transition in centrosymmetric materials,” <i>Physical Review B</i>, vol. 105. American Physical Society, 2022.","chicago":"Davydova, Margarita, Maksym Serbyn, and Hiroaki Ishizuka. “Symmetry-Allowed Nonlinear Orbital Response across the Topological Phase Transition in Centrosymmetric Materials.” <i>Physical Review B</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/PhysRevB.105.L121407\">https://doi.org/10.1103/PhysRevB.105.L121407</a>.","mla":"Davydova, Margarita, et al. “Symmetry-Allowed Nonlinear Orbital Response across the Topological Phase Transition in Centrosymmetric Materials.” <i>Physical Review B</i>, vol. 105, L121407, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/PhysRevB.105.L121407\">10.1103/PhysRevB.105.L121407</a>.","ista":"Davydova M, Serbyn M, Ishizuka H. 2022. Symmetry-allowed nonlinear orbital response across the topological phase transition in centrosymmetric materials. Physical Review B. 105, L121407."},"date_created":"2022-03-18T10:20:46Z","year":"2022","acknowledgement":"We are grateful to Takahiro Morimoto and Zhanybek Alpichshev for fruitful discussions. MD was supported by Austrian Agency for International Cooperation in Education and Research (OeAD-GmbH) and by the John Seo Fellowship at MIT. HI was supported by JSPS KAKENHI Grant Numbers JP19K14649 and JP18H03676, and by UTokyo Global Activity Support Program for\r\nYoung Researchers.","doi":"10.1103/PhysRevB.105.L121407","_id":"10863","article_type":"letter_note"},{"author":[{"orcid":"0000-0002-4842-6671","last_name":"De Nicola","id":"42832B76-F248-11E8-B48F-1D18A9856A87","first_name":"Stefano","full_name":"De Nicola, Stefano"},{"full_name":"Michailidis, Alexios","first_name":"Alexios","last_name":"Michailidis","id":"36EBAD38-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0002-2399-5827","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","last_name":"Serbyn","full_name":"Serbyn, Maksym","first_name":"Maksym"}],"arxiv":1,"oa_version":"Preprint","day":"15","main_file_link":[{"url":" https://doi.org/10.48550/arXiv.2112.11273","open_access":"1"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","publication_identifier":{"eisbn":["2469-9969"],"issn":["2469-9950"]},"month":"04","type":"journal_article","status":"public","title":"Entanglement and precession in two-dimensional dynamical quantum phase transitions","date_updated":"2023-08-03T06:33:33Z","oa":1,"article_processing_charge":"No","intvolume":"       105","isi":1,"language":[{"iso":"eng"}],"publication":"Physical Review B","publication_status":"published","external_id":{"arxiv":["2112.11273"],"isi":["000806812400004"]},"abstract":[{"text":"Nonanalytic points in the return probability of a quantum state as a function of time, known as dynamical quantum phase transitions (DQPTs), have received great attention in recent years, but the understanding of their mechanism is still incomplete. In our recent work [Phys. Rev. Lett. 126, 040602 (2021)], we demonstrated that one-dimensional DQPTs can be produced by two distinct mechanisms, namely semiclassical precession and entanglement generation, leading to the definition of precession (pDQPTs) and entanglement (eDQPTs) dynamical quantum phase transitions. In this manuscript, we extend and investigate the notion of p- and eDQPTs in two-dimensional systems by considering semi-infinite ladders of varying width. For square lattices, we find that pDQPTs and eDQPTs persist and are characterized by similar phenomenology as in 1D: pDQPTs are associated with a magnetization sign change and a wide entanglement gap, while eDQPTs correspond to suppressed local observables and avoided crossings in the entanglement spectrum. However, DQPTs show higher sensitivity to the ladder width and other details, challenging the extrapolation to the thermodynamic limit especially for eDQPTs. Moving to honeycomb lattices, we also demonstrate that lattices with an odd number of nearest neighbors give rise to phenomenologies beyond the one-dimensional classification.","lang":"eng"}],"project":[{"_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","grant_number":"850899","name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","call_identifier":"H2020"},{"grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"}],"department":[{"_id":"MaSe"}],"quality_controlled":"1","volume":105,"publisher":"American Physical Society","date_published":"2022-04-15T00:00:00Z","date_created":"2022-04-28T08:06:10Z","citation":{"apa":"De Nicola, S., Michailidis, A., &#38; Serbyn, M. (2022). Entanglement and precession in two-dimensional dynamical quantum phase transitions. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.105.165149\">https://doi.org/10.1103/PhysRevB.105.165149</a>","mla":"De Nicola, Stefano, et al. “Entanglement and Precession in Two-Dimensional Dynamical Quantum Phase Transitions.” <i>Physical Review B</i>, vol. 105, 165149, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/PhysRevB.105.165149\">10.1103/PhysRevB.105.165149</a>.","chicago":"De Nicola, Stefano, Alexios Michailidis, and Maksym Serbyn. “Entanglement and Precession in Two-Dimensional Dynamical Quantum Phase Transitions.” <i>Physical Review B</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/PhysRevB.105.165149\">https://doi.org/10.1103/PhysRevB.105.165149</a>.","ista":"De Nicola S, Michailidis A, Serbyn M. 2022. Entanglement and precession in two-dimensional dynamical quantum phase transitions. Physical Review B. 105, 165149.","short":"S. De Nicola, A. Michailidis, M. Serbyn, Physical Review B 105 (2022).","ama":"De Nicola S, Michailidis A, Serbyn M. Entanglement and precession in two-dimensional dynamical quantum phase transitions. <i>Physical Review B</i>. 2022;105. doi:<a href=\"https://doi.org/10.1103/PhysRevB.105.165149\">10.1103/PhysRevB.105.165149</a>","ieee":"S. De Nicola, A. Michailidis, and M. Serbyn, “Entanglement and precession in two-dimensional dynamical quantum phase transitions,” <i>Physical Review B</i>, vol. 105. American Physical Society, 2022."},"acknowledgement":"We acknowledge support by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 850899).\r\nS.D.N. also acknowledges funding from the Institute of Science and Technology (IST) Austria, and from the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Skłodowska-Curie Grant Agreement No. 754411.","year":"2022","ec_funded":1,"article_number":"165149","_id":"11337","article_type":"original","doi":"10.1103/PhysRevB.105.165149"}]