--- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '21340' abstract: - lang: eng text: Equilibrium quantum systems are often described by a gas of weakly interacting normal modes. Bringing such systems far from equilibrium, however, can drastically enhance mode-to-mode interactions. Understanding the resulting liquid is a fundamental question for quantum statistical mechanics and a practical question for engineering driven quantum devices. To tackle this question, we probe the non-equilibrium kinetics of one-dimensional plasmons in a long chain of Josephson junctions. We introduce multimode spectroscopy to controllably study the departure from equilibrium, witnessing the evolution from pairwise coupling between plasma modes at weak driving to dramatic, high-order, cascaded couplings at strong driving. Scaling to many-mode drives, we stimulate interactions between hundreds of modes, resulting in near-continuum internal dynamics. Imaging the resulting non-equilibrium plasmon populations, we then resolve the nonlocal redistribution of energy in the response to a weak perturbation—an explicit verification of the emergence of a strongly interacting, non-equilibrium liquid of plasmons. acknowledged_ssus: - _id: NanoFab - _id: M-Shop acknowledgement: We thank V. Vitelli, M. Fruchart, and A. Burshstein for helpful input. We acknowledge technical support from the Nanofabrication Facility and the MIBA machine shop at IST Austria. This research was supported in part by grant NSF PHY-2309135 to the Kavli Institute for Theoretical Physics (KITP), by the Austrian Science Fund (FWF) SFB F86, and by the NOMIS foundation. article_number: eady7222 article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Anton full_name: Bubis, Anton id: 1f6212b5-f795-11ec-9c0c-de4780302890 last_name: Bubis - first_name: Lucia full_name: Vigliotti, Lucia id: 539e1e1a-e604-11ee-a1df-f02b018e5c8c last_name: Vigliotti - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Andrew P full_name: Higginbotham, Andrew P id: 4AD6785A-F248-11E8-B48F-1D18A9856A87 last_name: Higginbotham orcid: 0000-0003-2607-2363 citation: ama: Bubis A, Vigliotti L, Serbyn M, Higginbotham AP. Non-equilibrium plasmon liquid in a Josephson junction chain. Science Advances. 2026;12(7). doi:10.1126/sciadv.ady7222 apa: Bubis, A., Vigliotti, L., Serbyn, M., & Higginbotham, A. P. (2026). Non-equilibrium plasmon liquid in a Josephson junction chain. Science Advances. American Association for the Advancement of Science. https://doi.org/10.1126/sciadv.ady7222 chicago: Bubis, Anton, Lucia Vigliotti, Maksym Serbyn, and Andrew P Higginbotham. “Non-Equilibrium Plasmon Liquid in a Josephson Junction Chain.” Science Advances. American Association for the Advancement of Science, 2026. https://doi.org/10.1126/sciadv.ady7222. ieee: A. Bubis, L. Vigliotti, M. Serbyn, and A. P. Higginbotham, “Non-equilibrium plasmon liquid in a Josephson junction chain,” Science Advances, vol. 12, no. 7. American Association for the Advancement of Science, 2026. ista: Bubis A, Vigliotti L, Serbyn M, Higginbotham AP. 2026. Non-equilibrium plasmon liquid in a Josephson junction chain. Science Advances. 12(7), eady7222. mla: Bubis, Anton, et al. “Non-Equilibrium Plasmon Liquid in a Josephson Junction Chain.” Science Advances, vol. 12, no. 7, eady7222, American Association for the Advancement of Science, 2026, doi:10.1126/sciadv.ady7222. short: A. Bubis, L. Vigliotti, M. Serbyn, A.P. Higginbotham, Science Advances 12 (2026). corr_author: '1' date_created: 2026-02-22T20:47:38Z date_published: 2026-02-13T00:00:00Z date_updated: 2026-02-24T07:25:34Z day: '13' ddc: - '530' department: - _id: MaSe - _id: AnHi - _id: GeKa doi: 10.1126/sciadv.ady7222 external_id: arxiv: - '2504.09721' file: - access_level: open_access checksum: 8402f322f8f0e858b1d9aac57e306e31 content_type: application/pdf creator: dernst date_created: 2026-02-24T07:23:32Z date_updated: 2026-02-24T07:23:32Z file_id: '21353' file_name: 2026_ScienceAdv_Bubis.pdf file_size: 2775975 relation: main_file success: 1 file_date_updated: 2026-02-24T07:23:32Z has_accepted_license: '1' intvolume: ' 12' issue: '7' language: - iso: eng month: '02' oa: 1 oa_version: Published Version publication: Science Advances publication_identifier: eissn: - 2375-2548 publication_status: published publisher: American Association for the Advancement of Science quality_controlled: '1' status: public title: Non-equilibrium plasmon liquid in a Josephson junction chain tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 12 year: '2026' ... --- OA_place: publisher OA_type: hybrid PlanS_conform: '1' _id: '21480' abstract: - lang: eng text: We present and test a protocol to learn the matrix-product operator (MPO) representation of an experimentally prepared quantum state. The protocol takes as input classical shadows corresponding to local randomized measurements, and outputs the tensors of an MPO maximizing a suitably defined fidelity with the experimental state. The tensor optimization is carried out sequentially, similarly to the well-known density matrix renormalization group algorithm. Our approach is provably efficient under certain technical conditions expected to be met in short-range correlated states and in typical noisy experimental settings. Under the same conditions, we also provide an efficient scheme to estimate fidelities between the learned and the experimental states. We experimentally demonstrate our protocol by learning entangled quantum states of up to N = 96 qubits in a superconducting quantum processor. Our method upgrades classical shadows to large-scale quantum computation and simulation experiments. acknowledgement: "We acknowledge insightful discussions with Antoine Browaeys, Mari Carmen Bañuls, Soonwon Choi, Thierry Lahaye, Daniel Stilck-França, Georgios Styliaris, and Xavier Waintal. The experimental data have been collected using the Qiskit library [103], and have been postprocessed using the RandomMeas [104] and ITensor [105] libraries. The work of M. V. and B. V. was funded by the French National Research Agency via the JCJC project QRand (No. ANR-20-CE47-0005), and via the research programs Plan France 2030 EPIQ (No. ANR-22-\r\nPETQ-0007), QUBITAF (No. ANR-22-PETQ-0004), and HQI (No. ANR-22-PNCQ-0002). We acknowledge the use of IBM Quantum Credits for this work. M. L. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy—EXC-2111–390814868. The work of C. L. was funded by the French National Research Agency via the PRC project ESQuisses (No. ANR-20-CE47-0014-01). J. I. C.\r\nacknowledges funding from the Federal Ministry of Education and Research Germany (BMBF) via the project FermiQP (No. 13N15889). Work at MPQ is part of the Munich Quantum Valley, which is supported by the Bavarian state government with funds from the Hightech Agenda\r\nBayern Plus. P. Z. acknowledges support by the European Union’s Horizon Europe research and innovation program under Grant Agreement No. 101113690 (PASQANS2). The work of L. P. was funded by the European Union (ERC, QUANTHEM, No. 101114881). We acknowledge support\r\nby the Erwin Schrödinger International Institute for Mathematics and Physics (ESI)." article_number: '090801' article_processing_charge: Yes (in subscription journal) article_type: original arxiv: 1 author: - first_name: Matteo full_name: Votto, Matteo last_name: Votto - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Cécilia full_name: Lancien, Cécilia last_name: Lancien - first_name: J. Ignacio full_name: Cirac, J. Ignacio last_name: Cirac - first_name: Peter full_name: Zoller, Peter last_name: Zoller - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Lorenzo full_name: Piroli, Lorenzo last_name: Piroli - first_name: Benoît full_name: Vermersch, Benoît last_name: Vermersch citation: ama: Votto M, Ljubotina M, Lancien C, et al. Learning mixed quantum states in large-scale experiments. Physical Review Letters. 2026;136(9). doi:10.1103/rbg2-f61m apa: Votto, M., Ljubotina, M., Lancien, C., Cirac, J. I., Zoller, P., Serbyn, M., … Vermersch, B. (2026). Learning mixed quantum states in large-scale experiments. Physical Review Letters. American Physical Society. https://doi.org/10.1103/rbg2-f61m chicago: Votto, Matteo, Marko Ljubotina, Cécilia Lancien, J. Ignacio Cirac, Peter Zoller, Maksym Serbyn, Lorenzo Piroli, and Benoît Vermersch. “Learning Mixed Quantum States in Large-Scale Experiments.” Physical Review Letters. American Physical Society, 2026. https://doi.org/10.1103/rbg2-f61m. ieee: M. Votto et al., “Learning mixed quantum states in large-scale experiments,” Physical Review Letters, vol. 136, no. 9. American Physical Society, 2026. ista: Votto M, Ljubotina M, Lancien C, Cirac JI, Zoller P, Serbyn M, Piroli L, Vermersch B. 2026. Learning mixed quantum states in large-scale experiments. Physical Review Letters. 136(9), 090801. mla: Votto, Matteo, et al. “Learning Mixed Quantum States in Large-Scale Experiments.” Physical Review Letters, vol. 136, no. 9, 090801, American Physical Society, 2026, doi:10.1103/rbg2-f61m. short: M. Votto, M. Ljubotina, C. Lancien, J.I. Cirac, P. Zoller, M. Serbyn, L. Piroli, B. Vermersch, Physical Review Letters 136 (2026). date_created: 2026-03-23T14:56:32Z date_published: 2026-03-04T00:00:00Z date_updated: 2026-03-23T15:39:34Z day: '04' ddc: - '530' department: - _id: MaSe doi: 10.1103/rbg2-f61m external_id: arxiv: - '2507.12550' file: - access_level: open_access checksum: 12b16ce2d49c62b2909da95121bfaadb content_type: application/pdf creator: dernst date_created: 2026-03-23T15:35:27Z date_updated: 2026-03-23T15:35:27Z file_id: '21491' file_name: 2026_PhysicalReviewLetters_Votto.pdf file_size: 500041 relation: main_file success: 1 file_date_updated: 2026-03-23T15:35:27Z has_accepted_license: '1' intvolume: ' 136' issue: '9' language: - iso: eng month: '03' oa: 1 oa_version: Published Version publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Learning mixed quantum states in large-scale experiments tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 136 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '21501' abstract: - lang: eng text: "Kinetically constrained models were originally introduced to capture slow relaxation in glassy systems, where dynamics are hindered by local constraints instead of energy barriers. Their quantum counterparts have recently drawn attention for exhibiting highly degenerate eigenstates at zero energy—known as zero modes—stemming from chiral symmetry. Yet, the structure and implications of these zero modes remain poorly understood. In this work, we focus on the properties of the zero mode subspace in quantum kinetically constrained models with a U(1) particle-conservation symmetry. We use the U(1) East, which lacks inversion symmetry, and the inversion-symmetric U(1) East-West models to illustrate our two main results. First, we observe that the simultaneous presence of constraints and chiral symmetry generally leads to a parametric increase in the number of zero modes due to the fragmentation of the many-body\r\nHilbert space into disconnected sectors. Second, we generalize the concept of compact localized states from single-particle physics and introduce the notion of collective bound states, a special kind of nonergodic eigenstates that are robust to enlarging the system size. We formulate sufficient criteria for their existence, arguing that the degenerate zero mode subspace plays a central role, and demonstrate bound states in both example models and in a two-dimensional model, the U(1) North-East, and in the pairflip model, a system without particle conservation. Our results motivate a systematic study of bound states and their relation to ergodicity breaking, transport, and other properties of quantum kinetically constrained\r\nmodels. " acknowledgement: The authors acknowledge useful discussions with Berislav Buca. This work was supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899). M.L. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy—EXC-2111—390814868. This research was supported in part by grant NSF PHY-2309135 to the Kavli Institute for Theoretical Physics (KITP). article_number: '010352' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Eulalia full_name: Nicolau Jimenez, Eulalia id: 04b4791c-8fd7-11ee-a7df-be2fdc569c48 last_name: Nicolau Jimenez - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Nicolau Jimenez E, Ljubotina M, Serbyn M. Fragmentation, zero modes, and collective bound states in constrained models. PRX Quantum. 2026;7. doi:10.1103/sl79-1xgb apa: Nicolau Jimenez, E., Ljubotina, M., & Serbyn, M. (2026). Fragmentation, zero modes, and collective bound states in constrained models. PRX Quantum. American Physical Society. https://doi.org/10.1103/sl79-1xgb chicago: Nicolau Jimenez, Eulalia, Marko Ljubotina, and Maksym Serbyn. “Fragmentation, Zero Modes, and Collective Bound States in Constrained Models.” PRX Quantum. American Physical Society, 2026. https://doi.org/10.1103/sl79-1xgb. ieee: E. Nicolau Jimenez, M. Ljubotina, and M. Serbyn, “Fragmentation, zero modes, and collective bound states in constrained models,” PRX Quantum, vol. 7. American Physical Society, 2026. ista: Nicolau Jimenez E, Ljubotina M, Serbyn M. 2026. Fragmentation, zero modes, and collective bound states in constrained models. PRX Quantum. 7, 010352. mla: Nicolau Jimenez, Eulalia, et al. “Fragmentation, Zero Modes, and Collective Bound States in Constrained Models.” PRX Quantum, vol. 7, 010352, American Physical Society, 2026, doi:10.1103/sl79-1xgb. short: E. Nicolau Jimenez, M. Ljubotina, M. Serbyn, PRX Quantum 7 (2026). corr_author: '1' date_created: 2026-03-28T14:57:56Z date_published: 2026-03-13T00:00:00Z date_updated: 2026-03-30T06:09:28Z day: '13' ddc: - '530' department: - _id: MaSe doi: 10.1103/sl79-1xgb ec_funded: 1 external_id: arxiv: - '2504.17627' file: - access_level: open_access checksum: d155ffa9e1a8275702149165f4bf963c content_type: application/pdf creator: dernst date_created: 2026-03-30T06:08:07Z date_updated: 2026-03-30T06:08:07Z file_id: '21505' file_name: 2026_PRXQuantum_Nicolau.pdf file_size: 1848724 relation: main_file success: 1 file_date_updated: 2026-03-30T06:08:07Z has_accepted_license: '1' intvolume: ' 7' language: - iso: eng month: '03' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: PRX Quantum publication_identifier: eissn: - 2691-3399 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Fragmentation, zero modes, and collective bound states in constrained models tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 7 year: '2026' ... --- OA_place: publisher OA_type: hybrid _id: '19833' abstract: - lang: eng text: Eigenstates of quantum many-body systems are often used to define phases of matter in and out of equilibrium; however, experimentally accessing highly excited eigenstates is a challenging task, calling for alternative strategies to dynamically probe nonequilibrium phases. In this work, we characterize the dynamical properties of a disordered spin chain, focusing on the spin-glass regime. Using tensor-network simulations, we observe oscillatory behavior of local expectation values and bipartite entanglement entropy. We explain these oscillations deep in the many-body localized spin-glass regime via a simple theoretical model. From perturbation theory, we predict the timescales up to which our analytical description is valid and confirm it with numerical simulations. Finally, we study the correlation length dynamics, which, after a long-time plateau, resume growing in line with renormalization group (RG) expectations. Our work suggests that RG predictions can be quantitatively tested against numerical simulations and experiments, potentially enabling microscopic descriptions of dynamical phases in large systems. acknowledgement: We thank D. A. Abanin for insightful discussions in the early stages of this work. P.B. acknowledges support by the Austrian Science Fund (FWF) [Grant Agreement No. 10.55776/ESP9057324]. This research was funded in whole or in part by the Austrian Science Fund (FWF) [10.55776/COE1]. The authors acknowledge support by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (Grant Agreement No. 850899). M.L. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy–EXC-2111–390814868. The authors acknowledge PRACE for awarding access to Joliot-Curie at GENCI@CEA, France, where the TEBD simulations were performed. The TEBD simulations were performed using the ITensor library [52]. article_number: L220202 article_processing_charge: Yes (in subscription journal) article_type: letter_note arxiv: 1 author: - first_name: Pietro full_name: Brighi, Pietro id: 4115AF5C-F248-11E8-B48F-1D18A9856A87 last_name: Brighi orcid: 0000-0002-7969-2729 - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Brighi P, Ljubotina M, Serbyn M. Probing the many-body localized spin-glass phase through quench dynamics. Physical Review B. 2025;111(22). doi:10.1103/9fms-ygfz apa: Brighi, P., Ljubotina, M., & Serbyn, M. (2025). Probing the many-body localized spin-glass phase through quench dynamics. Physical Review B. American Physical Society. https://doi.org/10.1103/9fms-ygfz chicago: Brighi, Pietro, Marko Ljubotina, and Maksym Serbyn. “Probing the Many-Body Localized Spin-Glass Phase through Quench Dynamics.” Physical Review B. American Physical Society, 2025. https://doi.org/10.1103/9fms-ygfz. ieee: P. Brighi, M. Ljubotina, and M. Serbyn, “Probing the many-body localized spin-glass phase through quench dynamics,” Physical Review B, vol. 111, no. 22. American Physical Society, 2025. ista: Brighi P, Ljubotina M, Serbyn M. 2025. Probing the many-body localized spin-glass phase through quench dynamics. Physical Review B. 111(22), L220202. mla: Brighi, Pietro, et al. “Probing the Many-Body Localized Spin-Glass Phase through Quench Dynamics.” Physical Review B, vol. 111, no. 22, L220202, American Physical Society, 2025, doi:10.1103/9fms-ygfz. short: P. Brighi, M. Ljubotina, M. Serbyn, Physical Review B 111 (2025). date_created: 2025-06-13T06:09:38Z date_published: 2025-06-12T00:00:00Z date_updated: 2025-09-30T12:48:10Z day: '12' ddc: - '530' department: - _id: MaSe doi: 10.1103/9fms-ygfz ec_funded: 1 external_id: arxiv: - '2502.08192' isi: - '001511503800006' file: - access_level: open_access checksum: 7941f92124793a383ca132eee2c289c5 content_type: application/pdf creator: dernst date_created: 2025-06-23T06:28:17Z date_updated: 2025-06-23T06:28:17Z file_id: '19861' file_name: 2025_PhysReviewB_Brighi.pdf file_size: 1082749 relation: main_file success: 1 file_date_updated: 2025-06-23T06:28:17Z has_accepted_license: '1' intvolume: ' 111' isi: 1 issue: '22' language: - iso: eng month: '06' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Probing the many-body localized spin-glass phase through quench dynamics tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 111 year: '2025' ... --- OA_place: publisher OA_type: hybrid _id: '19852' abstract: - lang: eng text: "Technology involving hybrid superconductor–semiconductor materials is a promising avenue for engineering quantum devices for information storage, manipulation, and transmission. Proximity-induced superconducting correlations are an essential part of such devices. While the proximity effect in the conduction band of common semiconductors is well understood, its manifestation in confined hole gases, realized for instance in germanium, is an active area of research. Lower-dimensional hole-based systems, particularly in germanium, are emerging as an attractive platform for a variety of solid-state quantum devices, due to their combination of efficient spin and charge control and long coherence times. The recent experimental realization of the proximity effect in germanium thus calls for a theoretical description that is tailored to hole gases. In this work, we propose a simple model to describe proximity-induced superconductivity in two-dimensional hole gases, incorporating both the heavy-hole (HH) and light-hole (LH) bands. We start from the Luttinger–Kohn model, introduce three parameters that characterize hopping across the superconductor–semiconductor interface, and derive explicit intraband and interband effective pairing terms for the HH and LH bands. Unlike previous approaches, our theory provides a quantitative relationship between induced pairings and interface properties. Restricting our general model to an experimentally relevant case where only the HH band crosses the chemical potential, we predict the coexistence of \U0001D460-wave and \U0001D451-wave singlet pairings, along with triplet-type pairings, and modified Zeeman and Rashba spin–orbit couplings. Our results thus present a starting point for theoretical modeling of quantum devices based on proximitized hole gases, fueling further progress in quantum technology." acknowledgement: We acknowledge useful discussions with Georgios Katsaros, Andrew Higginbotham, and Oliver Schwarze. This research was funded in part by the Austrian Science Fund (FWF) F 86, the European Research Council (Grant Agreement No. 856526), and by the DFG Collaborative Research Center (CRC) 183 Project No. 277101999. article_number: '214518' article_processing_charge: Yes (via OA deal) article_type: original arxiv: 1 author: - first_name: Serafim full_name: Babkin, Serafim id: e63d75c3-72ef-11ef-b75a-e303e149911f last_name: Babkin - first_name: Benjamin full_name: Joecker, Benjamin last_name: Joecker - first_name: Karsten full_name: Flensberg, Karsten last_name: Flensberg - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Jeroen full_name: Danon, Jeroen last_name: Danon citation: ama: Babkin S, Joecker B, Flensberg K, Serbyn M, Danon J. Superconducting proximity effect in two-dimensional hole gases. Physical Review B. 2025;111(21). doi:10.1103/k4jh-pnxy apa: Babkin, S., Joecker, B., Flensberg, K., Serbyn, M., & Danon, J. (2025). Superconducting proximity effect in two-dimensional hole gases. Physical Review B. American Physical Society. https://doi.org/10.1103/k4jh-pnxy chicago: Babkin, Serafim, Benjamin Joecker, Karsten Flensberg, Maksym Serbyn, and Jeroen Danon. “Superconducting Proximity Effect in Two-Dimensional Hole Gases.” Physical Review B. American Physical Society, 2025. https://doi.org/10.1103/k4jh-pnxy. ieee: S. Babkin, B. Joecker, K. Flensberg, M. Serbyn, and J. Danon, “Superconducting proximity effect in two-dimensional hole gases,” Physical Review B, vol. 111, no. 21. American Physical Society, 2025. ista: Babkin S, Joecker B, Flensberg K, Serbyn M, Danon J. 2025. Superconducting proximity effect in two-dimensional hole gases. Physical Review B. 111(21), 214518. mla: Babkin, Serafim, et al. “Superconducting Proximity Effect in Two-Dimensional Hole Gases.” Physical Review B, vol. 111, no. 21, 214518, American Physical Society, 2025, doi:10.1103/k4jh-pnxy. short: S. Babkin, B. Joecker, K. Flensberg, M. Serbyn, J. Danon, Physical Review B 111 (2025). corr_author: '1' date_created: 2025-06-19T16:54:54Z date_published: 2025-06-18T00:00:00Z date_updated: 2025-09-30T12:53:47Z day: '18' ddc: - '530' department: - _id: MaSe - _id: GradSch doi: 10.1103/k4jh-pnxy external_id: arxiv: - '2412.04084' isi: - '001514328000004' file: - access_level: open_access checksum: fa8757f4780cfaeb51579c626284a8c1 content_type: application/pdf creator: dernst date_created: 2025-06-23T10:31:11Z date_updated: 2025-06-23T10:31:11Z file_id: '19869' file_name: 2025_PhysReviewB_Babkin.pdf file_size: 1719489 relation: main_file success: 1 file_date_updated: 2025-06-23T10:31:11Z has_accepted_license: '1' intvolume: ' 111' isi: 1 issue: '21' language: - iso: eng month: '06' oa: 1 oa_version: Published Version project: - _id: 34a7f947-11ca-11ed-8bc3-c5dc2bbaae25 grant_number: F8609 name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems: Probing topology in circuits and quantum materials' publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Superconducting proximity effect in two-dimensional hole gases tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 111 year: '2025' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '20646' abstract: - lang: eng text: Describing general quantum many-body dynamics is a challenging task due to the exponential growth of the Hilbert space with system size. The time-dependent variational principle (TDVP) provides a powerful tool to tackle this task by projecting quantum evolution onto a classical dynamical system within a variational manifold. In classical systems, periodic orbits play a crucial role in understanding the structure of the phase space and the long-term behavior of the system. However, finding periodic orbits is generally difficult, and their existence and properties in generic TDVP dynamics over matrix product states have remained largely unexplored. In this work, we develop an algorithm to systematically identify and characterize periodic orbits in TDVP dynamics. Applying our method to the periodically kicked Ising model, we uncover both stable and unstable periodic orbits. We characterize the Kolmogorov-Arnold-Moser tori in the vicinity of stable periodic orbits and track the change of the periodic orbits as we modify the Hamiltonian parameters. We observe that periodic orbits exist at any value of the coupling constant of the kicked Ising model between prethermal and fully thermalizing regimes, but their relevance to quantum dynamics and imprint on quantum eigenstates diminishes as the system leaves the prethermal regime. Our results demonstrate that periodic orbits provide valuable insights into the TDVP approximation of quantum many-body evolution and establish a closer connection between quantum and classical chaos. acknowledgement: We acknowledge useful discussions with C. Kollath, A. Green, and D. Huse. E.P., M.L., and M.S. acknowledge support by the European Research Council under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899). This research was funded in whole or in part by the Austrian Science Fund (FWF) (Grant No. 10.55776/COE1). For open access purposes, the author has applied a CC BY public copyright license to any author accepted manuscript version arising from this submission. M.L. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy—EXC-2111—390814868. This research was supported in part by National Science Foundation (NSF) Grant No. PHY-2309135 to the Kavli Institute for Theoretical Physics (KITP) and by the Erwin Schrödinger International Institute for Mathematics and Physics (ESI). article_number: '040333' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Elena full_name: Petrova, Elena id: 0ac84990-897b-11ed-a09c-f5abb56a4ede last_name: Petrova - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Gökhan full_name: Yalniz, Gökhan id: 66E74FA2-D8BF-11E9-8249-8DE2E5697425 last_name: Yalniz orcid: 0000-0002-8490-9312 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Petrova E, Ljubotina M, Yalniz G, Serbyn M. Finding periodic orbits in projected quantum many-body dynamics. PRX Quantum. 2025;6(4). doi:10.1103/tldp-kvkd apa: Petrova, E., Ljubotina, M., Yalniz, G., & Serbyn, M. (2025). Finding periodic orbits in projected quantum many-body dynamics. PRX Quantum. American Physical Society. https://doi.org/10.1103/tldp-kvkd chicago: Petrova, Elena, Marko Ljubotina, Gökhan Yalniz, and Maksym Serbyn. “Finding Periodic Orbits in Projected Quantum Many-Body Dynamics.” PRX Quantum. American Physical Society, 2025. https://doi.org/10.1103/tldp-kvkd. ieee: E. Petrova, M. Ljubotina, G. Yalniz, and M. Serbyn, “Finding periodic orbits in projected quantum many-body dynamics,” PRX Quantum, vol. 6, no. 4. American Physical Society, 2025. ista: Petrova E, Ljubotina M, Yalniz G, Serbyn M. 2025. Finding periodic orbits in projected quantum many-body dynamics. PRX Quantum. 6(4), 040333. mla: Petrova, Elena, et al. “Finding Periodic Orbits in Projected Quantum Many-Body Dynamics.” PRX Quantum, vol. 6, no. 4, 040333, American Physical Society, 2025, doi:10.1103/tldp-kvkd. short: E. Petrova, M. Ljubotina, G. Yalniz, M. Serbyn, PRX Quantum 6 (2025). corr_author: '1' date_created: 2025-11-14T09:40:52Z date_published: 2025-11-12T00:00:00Z date_updated: 2026-04-28T13:14:29Z day: '12' ddc: - '539' department: - _id: GradSch - _id: BjHo - _id: MaSe doi: 10.1103/tldp-kvkd ec_funded: 1 external_id: arxiv: - '2504.12472' isi: - '001616473700003' file: - access_level: open_access checksum: 5d6d04ac518b4118405334e1ddc7a56d content_type: application/pdf creator: gyalniz date_created: 2025-11-14T09:44:10Z date_updated: 2025-11-14T09:44:10Z file_id: '20647' file_name: tldp-kvkd.pdf file_size: 2504713 relation: main_file success: 1 file_date_updated: 2025-11-14T09:44:10Z has_accepted_license: '1' intvolume: ' 6' isi: 1 issue: '4' language: - iso: eng month: '11' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: PRX Quantum publication_identifier: eissn: - 2691-3399 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News on ISTA website relation: press_release url: https://ista.ac.at/en/news/reaching-for-the-quantum-scars/ scopus_import: '1' status: public title: Finding periodic orbits in projected quantum many-body dynamics tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd volume: 6 year: '2025' ... --- OA_place: publisher OA_type: hybrid _id: '19664' abstract: - lang: eng text: Persistent revivals recently observed in Rydberg atom simulators have challenged our understanding of thermalization and attracted much interest to the concept of quantum many-body scars (QMBSs). QMBSs are non-thermal highly excited eigenstates that coexist with typical eigenstates in the spectrum of many-body Hamiltonians, and have since been reported in multiple theoretical models, including the so-called PXP model, approximately realized by Rydberg simulators. At the same time, questions of how common QMBSs are and in what models they are physically realized remain open. In this Letter, we demonstrate that QMBSs exist in a broader family of models that includes and generalizes PXP to longer-range constraints and states with different periodicity. We show that in each model, multiple QMBS families can be found. Each of them relies on a different approximate algebra, leading to oscillatory dynamics in all cases. However, in contrast to the PXP model, their observation requires launching dynamics from weakly entangled initial states rather than from a product state. QMBSs reported here may be experimentally probed using Rydberg atom simulator in the regime of longer-range Rydberg blockades. acknowledgement: The authors are grateful to Zlatko Papić, Dolev Bluvstein, Nishad Maskara, Marcello Dalmonte, Thomas Iadecola, and Johannes Feldmeier for insightful discussions. A. K., M. L., and M. S. acknowledge support by the European Research Council under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899). J.-Y. D. acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 101034413. article_number: '160401' article_processing_charge: Yes (via OA deal) article_type: original arxiv: 1 author: - first_name: Aron full_name: Kerschbaumer, Aron id: ade85a9c-3200-11ee-973b-91c1eb240410 last_name: Kerschbaumer orcid: 0009-0002-2370-8661 - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Jean-Yves Marc full_name: Desaules, Jean-Yves Marc id: 6c292945-a610-11ed-9eec-c3be1ad62a80 last_name: Desaules orcid: 0000-0002-3749-6375 citation: ama: Kerschbaumer A, Ljubotina M, Serbyn M, Desaules J-YM. Quantum many-body scars beyond the PXP model in Rydberg simulators. Physical Review Letters. 2025;134(16). doi:10.1103/PhysRevLett.134.160401 apa: Kerschbaumer, A., Ljubotina, M., Serbyn, M., & Desaules, J.-Y. M. (2025). Quantum many-body scars beyond the PXP model in Rydberg simulators. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.134.160401 chicago: Kerschbaumer, Aron, Marko Ljubotina, Maksym Serbyn, and Jean-Yves Marc Desaules. “Quantum Many-Body Scars beyond the PXP Model in Rydberg Simulators.” Physical Review Letters. American Physical Society, 2025. https://doi.org/10.1103/PhysRevLett.134.160401. ieee: A. Kerschbaumer, M. Ljubotina, M. Serbyn, and J.-Y. M. Desaules, “Quantum many-body scars beyond the PXP model in Rydberg simulators,” Physical Review Letters, vol. 134, no. 16. American Physical Society, 2025. ista: Kerschbaumer A, Ljubotina M, Serbyn M, Desaules J-YM. 2025. Quantum many-body scars beyond the PXP model in Rydberg simulators. Physical Review Letters. 134(16), 160401. mla: Kerschbaumer, Aron, et al. “Quantum Many-Body Scars beyond the PXP Model in Rydberg Simulators.” Physical Review Letters, vol. 134, no. 16, 160401, American Physical Society, 2025, doi:10.1103/PhysRevLett.134.160401. short: A. Kerschbaumer, M. Ljubotina, M. Serbyn, J.-Y.M. Desaules, Physical Review Letters 134 (2025). date_created: 2025-05-11T22:02:38Z date_published: 2025-04-22T00:00:00Z date_updated: 2026-04-28T13:34:57Z day: '22' ddc: - '530' department: - _id: MaSe doi: 10.1103/PhysRevLett.134.160401 ec_funded: 1 external_id: arxiv: - '2410.18913' isi: - '001480669300011' pmid: - '40344113' file: - access_level: open_access checksum: b7f581291e20f152d0efc64727314ca2 content_type: application/pdf creator: dernst date_created: 2025-05-12T07:33:38Z date_updated: 2025-05-12T07:33:38Z file_id: '19677' file_name: 2025_PhysReviewLetters_Kerschbaumer.pdf file_size: 1028993 relation: main_file success: 1 file_date_updated: 2025-05-12T07:33:38Z has_accepted_license: '1' intvolume: ' 134' isi: 1 issue: '16' language: - iso: eng month: '04' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' - _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c call_identifier: H2020 grant_number: '101034413' name: 'IST-BRIDGE: International postdoctoral program' publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News on ISTA website relation: press_release url: https://ista.ac.at/en/news/a-sky-full-of-quantum-scars/ record: - id: '19623' relation: research_data status: public scopus_import: '1' status: public title: Quantum many-body scars beyond the PXP model in Rydberg simulators tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd volume: 134 year: '2025' ... --- APC_amount: 3711,01 EUR DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '18488' abstract: - lang: eng text: The advancement of quantum simulators motivates the development of a theoretical framework to assist with efficient state preparation in quantum many-body systems. Generally, preparing a target entangled state via unitary evolution with time-dependent couplings is a challenging task and very little is known about the existence of solutions and their properties. In this work we develop a constructive approach for preparing matrix product states (MPS) via continuous unitary evolution. We provide an explicit construction of the operator that exactly implements the evolution of a given MPS along a specified direction in its tangent space. This operator can be written as a sum of local terms of finite range, yet it is in general non-Hermitian. Relying on the explicit construction of the non-Hermitian generator of the dynamics, we demonstrate the existence of a Hermitian sequence of operators that implements the desired MPS evolution with an error that decreases exponentially with the operator range. The construction is benchmarked on an explicit periodic trajectory in a translationally invariant MPS manifold. We demonstrate that the Floquet unitary generating the dynamics over one period of the trajectory features an approximate MPS-like eigenstate embedded among a sea of thermalizing eigenstates. These results show that our construction is not only useful for state preparation and control of many-body systems, but also provides a generic route towards Floquet scars—periodically driven models with quasilocal generators of dynamics that have exact MPS eigenstates in their spectrum. acknowledgement: We thank L. Piroli, S. Garratt, and A. Molnár for insightful discussions. This research was funded in part by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreements No. 850899 and No. 863476), the Austrian Science Fund (FWF) (Grant DOIs 10.55776/COE1, 10.55776/P36305, and 10.55776/F71), and the European Union (NextGenerationEU). This work was performed in part at the Aspen Center for Physics, which is supported by National Science Foundation Grant PHY-2210452. This research was supported in part by NSF Grant PHY-2309135 to the Kavli Institute for Theoretical Physics (KITP). article_number: '040311' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Elena full_name: Petrova, Elena id: 0ac84990-897b-11ed-a09c-f5abb56a4ede last_name: Petrova - first_name: Norbert full_name: Schuch, Norbert last_name: Schuch - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Ljubotina M, Petrova E, Schuch N, Serbyn M. Tangent space generators of matrix product states and exact floquet quantum scars. PRX Quantum. 2024;5(4). doi:10.1103/prxquantum.5.040311 apa: Ljubotina, M., Petrova, E., Schuch, N., & Serbyn, M. (2024). Tangent space generators of matrix product states and exact floquet quantum scars. PRX Quantum. American Physical Society. https://doi.org/10.1103/prxquantum.5.040311 chicago: Ljubotina, Marko, Elena Petrova, Norbert Schuch, and Maksym Serbyn. “Tangent Space Generators of Matrix Product States and Exact Floquet Quantum Scars.” PRX Quantum. American Physical Society, 2024. https://doi.org/10.1103/prxquantum.5.040311. ieee: M. Ljubotina, E. Petrova, N. Schuch, and M. Serbyn, “Tangent space generators of matrix product states and exact floquet quantum scars,” PRX Quantum, vol. 5, no. 4. American Physical Society, 2024. ista: Ljubotina M, Petrova E, Schuch N, Serbyn M. 2024. Tangent space generators of matrix product states and exact floquet quantum scars. PRX Quantum. 5(4), 040311. mla: Ljubotina, Marko, et al. “Tangent Space Generators of Matrix Product States and Exact Floquet Quantum Scars.” PRX Quantum, vol. 5, no. 4, 040311, American Physical Society, 2024, doi:10.1103/prxquantum.5.040311. short: M. Ljubotina, E. Petrova, N. Schuch, M. Serbyn, PRX Quantum 5 (2024). corr_author: '1' date_created: 2024-10-29T16:04:05Z date_published: 2024-10-23T00:00:00Z date_updated: 2025-09-08T14:26:29Z day: '23' ddc: - '530' department: - _id: MaSe doi: 10.1103/prxquantum.5.040311 ec_funded: 1 external_id: arxiv: - '2403.12325' isi: - '001346198800001' file: - access_level: open_access checksum: 2e057ba021744d0a74602517935326b3 content_type: application/pdf creator: dernst date_created: 2024-10-30T08:59:09Z date_updated: 2024-10-30T08:59:09Z file_id: '18489' file_name: 2024_PRXQuantum_Ljubotina.pdf file_size: 1151431 relation: main_file success: 1 file_date_updated: 2024-10-30T08:59:09Z has_accepted_license: '1' intvolume: ' 5' isi: 1 issue: '4' language: - iso: eng month: '10' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: PRX Quantum publication_identifier: eissn: - 2691-3399 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Tangent space generators of matrix product states and exact floquet quantum scars tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 5 year: '2024' ... --- OA_type: closed access _id: '18616' abstract: - lang: eng text: By patterning an ultrathin layered structure with tiny wells, physicists have created and imaged peculiar states known as quantum scars — revealing behaviour that could be used to boost the performance of electronic devices. article_processing_charge: No article_type: letter_note author: - first_name: Dmitry full_name: Abanin, Dmitry last_name: Abanin - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Abanin D, Serbyn M. Quantum scars make their mark in graphene. Nature. 2024;635(8040):825-826. doi:10.1038/d41586-024-03649-y apa: Abanin, D., & Serbyn, M. (2024). Quantum scars make their mark in graphene. Nature. Springer Nature. https://doi.org/10.1038/d41586-024-03649-y chicago: Abanin, Dmitry, and Maksym Serbyn. “Quantum Scars Make Their Mark in Graphene.” Nature. Springer Nature, 2024. https://doi.org/10.1038/d41586-024-03649-y. ieee: D. Abanin and M. Serbyn, “Quantum scars make their mark in graphene,” Nature, vol. 635, no. 8040. Springer Nature, pp. 825–826, 2024. ista: Abanin D, Serbyn M. 2024. Quantum scars make their mark in graphene. Nature. 635(8040), 825–826. mla: Abanin, Dmitry, and Maksym Serbyn. “Quantum Scars Make Their Mark in Graphene.” Nature, vol. 635, no. 8040, Springer Nature, 2024, pp. 825–26, doi:10.1038/d41586-024-03649-y. short: D. Abanin, M. Serbyn, Nature 635 (2024) 825–826. date_created: 2024-12-03T18:08:16Z date_published: 2024-11-27T00:00:00Z date_updated: 2025-09-08T14:57:35Z day: '27' department: - _id: MaSe doi: 10.1038/d41586-024-03649-y external_id: isi: - '001367935000029' pmid: - '39604614' intvolume: ' 635' isi: 1 issue: '8040' language: - iso: eng month: '11' oa_version: None page: 825-826 pmid: 1 publication: Nature publication_identifier: eissn: - 1476-4687 issn: - 0028-0836 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Quantum scars make their mark in graphene type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 635 year: '2024' ... --- _id: '15367' abstract: - lang: eng text: Two-dimensional semiconductor-superconductor heterostructures form the foundation of numerous nanoscale physical systems. However, measuring the properties of such heterostructures, and characterizing the semiconductor in-situ is challenging. A recent experimental study by [Phys. Rev. Lett. 128, 107701 (2022)] was able to probe the semiconductor within the heterostructure using microwave measurements of the superfluid density. This work revealed a rapid depletion of superfluid density in semiconductor, caused by the in-plane magnetic field which in presence of spin-orbit coupling creates so-called Bogoliubov Fermi surfaces. The experimental work used a simplified theoretical model that neglected the presence of non-magnetic disorder in the semiconductor, hence describing the data only qualitatively. Motivated by experiments, we introduce a theoretical model describing a disordered semiconductor with strong spin-orbit coupling that is proximitized by a superconductor. Our model provides specific predictions for the density of states and superfluid density. Presence of disorder leads to the emergence of a gapless superconducting phase, that may be viewed as a manifestation of Bogoliubov Fermi surface. When applied to real experimental data, our model showcases excellent quantitative agreement, enabling the extraction of material parameters such as mean free path and mobility, and estimating g-tensor after taking into account the orbital contribution of magnetic field. Our model can be used to probe in-situ parameters of other superconductor-semiconductor heterostructures and can be further extended to give access to transport properties. acknowledgement: "We acknowledge useful discussions with M. Geier, A. Levchenko, B. Ramshaw, T. Scaffidi, and\r\nJ. Shabani. This research was funded by the Austrian Science Fund (FWF) F 86.\r\nFor the purpose of open access, authors have applied a CC BY public copyright licence to any\r\nAuthor Accepted Manuscript version arising from this submission. MS acknowledges hospitality of KITP supported in part by the National Science Foundation under Grants No. NSF\r\nPHY-1748958 and PHY-2309135. APH acknowledges the support of the NOMIS foundation." article_number: '115' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Serafim full_name: Babkin, Serafim id: 41e64307-6672-11ee-b9ad-cc7a0075a479 last_name: Babkin orcid: 0009-0003-7382-8036 - first_name: Andrew P full_name: Higginbotham, Andrew P id: 4AD6785A-F248-11E8-B48F-1D18A9856A87 last_name: Higginbotham orcid: 0000-0003-2607-2363 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Babkin S, Higginbotham AP, Serbyn M. Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field. SciPost Physics. 2024;16(5). doi:10.21468/scipostphys.16.5.115 apa: Babkin, S., Higginbotham, A. P., & Serbyn, M. (2024). Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field. SciPost Physics. SciPost Foundation. https://doi.org/10.21468/scipostphys.16.5.115 chicago: Babkin, Serafim, Andrew P Higginbotham, and Maksym Serbyn. “Proximity-Induced Gapless Superconductivity in Two-Dimensional Rashba Semiconductor in Magnetic Field.” SciPost Physics. SciPost Foundation, 2024. https://doi.org/10.21468/scipostphys.16.5.115. ieee: S. Babkin, A. P. Higginbotham, and M. Serbyn, “Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field,” SciPost Physics, vol. 16, no. 5. SciPost Foundation, 2024. ista: Babkin S, Higginbotham AP, Serbyn M. 2024. Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field. SciPost Physics. 16(5), 115. mla: Babkin, Serafim, et al. “Proximity-Induced Gapless Superconductivity in Two-Dimensional Rashba Semiconductor in Magnetic Field.” SciPost Physics, vol. 16, no. 5, 115, SciPost Foundation, 2024, doi:10.21468/scipostphys.16.5.115. short: S. Babkin, A.P. Higginbotham, M. Serbyn, SciPost Physics 16 (2024). corr_author: '1' date_created: 2024-05-06T09:02:18Z date_published: 2024-05-01T00:00:00Z date_updated: 2025-09-04T13:53:20Z day: '01' ddc: - '530' department: - _id: MaSe - _id: AnHi doi: 10.21468/scipostphys.16.5.115 external_id: arxiv: - '2311.09347' isi: - '001215855200002' file: - access_level: open_access checksum: f999204856417dcf5a736ac8df432b96 content_type: application/pdf creator: dernst date_created: 2024-05-07T12:58:47Z date_updated: 2024-05-07T12:58:47Z file_id: '15369' file_name: 2024_SciPostPhys_Babkin.pdf file_size: 2733685 relation: main_file success: 1 file_date_updated: 2024-05-07T12:58:47Z has_accepted_license: '1' intvolume: ' 16' isi: 1 issue: '5' language: - iso: eng month: '05' oa: 1 oa_version: Published Version project: - _id: eb9b30ac-77a9-11ec-83b8-871f581d53d2 name: Protected states of quantum matter - _id: 34a7f947-11ca-11ed-8bc3-c5dc2bbaae25 grant_number: F8609 name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems: Probing topology in circuits and quantum materials' publication: SciPost Physics publication_identifier: issn: - 2542-4653 publication_status: published publisher: SciPost Foundation quality_controlled: '1' scopus_import: '1' status: public title: Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 16 year: '2024' ... --- APC_amount: 4863,6 EUR DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '17493' abstract: - lang: eng text: Estimating global properties of many-body quantum systems such as entropy or bipartite entanglement is a notoriously difficult task, typically requiring a number of measurements or classical postprocessing resources growing exponentially in the system size. In this work, we address the problem of estimating global entropies and mixed-state entanglement via partial-transposed (PT) moments and show that efficient estimation strategies exist under the assumption that all the spatial correlation lengths are finite. Focusing on one-dimensional systems, we identify a set of approximate factorization conditions (AFCs) on the system density matrix, which allow us to reconstruct entropies and PT moments from information on local subsystems. This identification yields a simple and efficient strategy for entropy and entanglement estimation. Our method could be implemented in different ways, depending on how information on local subsystems is extracted. Focusing on randomized measurements providing a practical and common measurement scheme, we prove that our protocol requires only polynomially many measurements and postprocessing operations, assuming that the state to be measured satisfies the AFCs. We prove that the AFCs hold for finite-depth quantum-circuit states and translation-invariant matrix-product density operators and provide numerical evidence that they are satisfied in more general, physically interesting cases, including thermal states of local Hamiltonians. We argue that our method could be practically useful to detect bipartite mixed-state entanglement for large numbers of qubits available in today’s quantum platforms. acknowledgement: B. V. acknowledges funding from the Austrian Science Foundation (Grant No. FWF, P 32597 N), from the French National Research Agency via the JCJC project QRand (Grant No. ANR-20-CE47-0005), and via the research programs Plan France 2030 EPIQ (Grant No. ANR-22-PETQ-0007), QUBITAF (Grant No. ANR-22-PETQ-0004), and HQI (Grant No. ANR-22-PNCQ-0002). M. L. and M. S. acknowledge support by the European Research Council under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899). M. S. acknowledges the hospitality of KITP supported in part by the National Science Foundation under Grants No. NSF PHY-1748958 and No. NSF PHY-2309135. J. I. C. is supported by the Hightech Agenda Bayern Plus through the Munich Quantum Valley and the German Federal Ministry of Education and Research through EQUAHUMO (Grant No. 13N16066). P. Z. acknowledges funding from the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 101113690 (PASQuanS2.1). article_number: '031035' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Benoît full_name: Vermersch, Benoît last_name: Vermersch - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: J. Ignacio full_name: Cirac, J. Ignacio last_name: Cirac - first_name: Peter full_name: Zoller, Peter last_name: Zoller - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Lorenzo full_name: Piroli, Lorenzo last_name: Piroli citation: ama: Vermersch B, Ljubotina M, Cirac JI, Zoller P, Serbyn M, Piroli L. Many-body entropies and entanglement from polynomially many local measurements. Physical Review X. 2024;14(3). doi:10.1103/physrevx.14.031035 apa: Vermersch, B., Ljubotina, M., Cirac, J. I., Zoller, P., Serbyn, M., & Piroli, L. (2024). Many-body entropies and entanglement from polynomially many local measurements. Physical Review X. American Physical Society. https://doi.org/10.1103/physrevx.14.031035 chicago: Vermersch, Benoît, Marko Ljubotina, J. Ignacio Cirac, Peter Zoller, Maksym Serbyn, and Lorenzo Piroli. “Many-Body Entropies and Entanglement from Polynomially Many Local Measurements.” Physical Review X. American Physical Society, 2024. https://doi.org/10.1103/physrevx.14.031035. ieee: B. Vermersch, M. Ljubotina, J. I. Cirac, P. Zoller, M. Serbyn, and L. Piroli, “Many-body entropies and entanglement from polynomially many local measurements,” Physical Review X, vol. 14, no. 3. American Physical Society, 2024. ista: Vermersch B, Ljubotina M, Cirac JI, Zoller P, Serbyn M, Piroli L. 2024. Many-body entropies and entanglement from polynomially many local measurements. Physical Review X. 14(3), 031035. mla: Vermersch, Benoît, et al. “Many-Body Entropies and Entanglement from Polynomially Many Local Measurements.” Physical Review X, vol. 14, no. 3, 031035, American Physical Society, 2024, doi:10.1103/physrevx.14.031035. short: B. Vermersch, M. Ljubotina, J.I. Cirac, P. Zoller, M. Serbyn, L. Piroli, Physical Review X 14 (2024). date_created: 2024-09-04T18:57:11Z date_published: 2024-08-26T00:00:00Z date_updated: 2025-09-08T09:04:14Z day: '26' ddc: - '530' department: - _id: MaSe doi: 10.1103/physrevx.14.031035 ec_funded: 1 external_id: arxiv: - '2311.08108' isi: - '001299667100002' file: - access_level: open_access checksum: 1b114acc89025120727200681e4e9074 content_type: application/pdf creator: cchlebak date_created: 2024-09-05T09:39:00Z date_updated: 2024-09-05T09:39:00Z file_id: '17532' file_name: 2024_PhysRevX_Vermersch.pdf file_size: 1408836 relation: main_file success: 1 file_date_updated: 2024-09-05T09:39:00Z has_accepted_license: '1' intvolume: ' 14' isi: 1 issue: '3' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: Physical Review X publication_identifier: issn: - 2160-3308 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Many-body entropies and entanglement from polynomially many local measurements tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 14 year: '2024' ... --- OA_place: repository _id: '17222' abstract: - lang: eng text: "The quantum approximate optimization algorithm (QAOA) uses a quantum computer\r\nto implement a variational method with $2p$ layers of alternating unitary\r\noperators, optimized by a classical computer to minimize a cost function. While\r\nrigorous performance guarantees exist for the QAOA at small depths $p$, the\r\nbehavior at large depths remains less clear, though simulations suggest\r\nexponentially fast convergence for certain problems. In this work, we gain\r\ninsights into the deep QAOA using an analytic expansion of the cost function\r\naround transition states. Transition states are constructed in a recursive\r\nmanner: from the local minima of the QAOA with $p$ layers we obtain transition\r\nstates of the QAOA with $p+1$ layers, which are stationary points characterized\r\nby a unique direction of negative curvature. We construct an analytic estimate\r\nof the negative curvature and the corresponding direction in parameter space at\r\neach transition state. The expansion of the QAOA cost function along the\r\nnegative direction to the quartic order gives a lower bound of the QAOA cost\r\nfunction improvement. We provide physical intuition behind the analytic\r\nexpressions for the local curvature and quartic expansion coefficient. Our\r\nnumerical study confirms the accuracy of our approximations and reveals that\r\nthe obtained bound and the true value of the QAOA cost function gain have a\r\ncharacteristic exponential decrease with the number of layers $p$, with the\r\nbound decreasing more rapidly. Our study establishes an analytical method for\r\nrecursively studying the QAOA that is applicable in the regime of high circuit\r\ndepth." article_number: '2405.10125' article_processing_charge: No arxiv: 1 author: - first_name: Raimel A full_name: Medina Ramos, Raimel A id: CE680B90-D85A-11E9-B684-C920E6697425 last_name: Medina Ramos orcid: 0000-0002-5383-2869 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Medina Ramos RA, Serbyn M. A recursive lower bound on the energy improvement of the quantum approximate optimization algorithm. arXiv. doi:10.48550/arXiv.2405.10125 apa: Medina Ramos, R. A., & Serbyn, M. (n.d.). A recursive lower bound on the energy improvement of the quantum approximate optimization algorithm. arXiv. https://doi.org/10.48550/arXiv.2405.10125 chicago: Medina Ramos, Raimel A, and Maksym Serbyn. “A Recursive Lower Bound on the Energy Improvement of the Quantum Approximate Optimization Algorithm.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2405.10125. ieee: R. A. Medina Ramos and M. Serbyn, “A recursive lower bound on the energy improvement of the quantum approximate optimization algorithm,” arXiv. . ista: Medina Ramos RA, Serbyn M. A recursive lower bound on the energy improvement of the quantum approximate optimization algorithm. arXiv, 2405.10125. mla: Medina Ramos, Raimel A., and Maksym Serbyn. “A Recursive Lower Bound on the Energy Improvement of the Quantum Approximate Optimization Algorithm.” ArXiv, 2405.10125, doi:10.48550/arXiv.2405.10125. short: R.A. Medina Ramos, M. Serbyn, ArXiv (n.d.). corr_author: '1' date_created: 2024-07-10T13:12:09Z date_published: 2024-05-16T00:00:00Z date_updated: 2026-04-07T12:43:22Z day: '16' department: - _id: MaSe doi: 10.48550/arXiv.2405.10125 external_id: arxiv: - '2405.10125' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2405.10125 month: '05' oa: 1 oa_version: Preprint publication: arXiv publication_status: draft related_material: record: - id: '17208' relation: dissertation_contains status: public status: public title: A recursive lower bound on the energy improvement of the quantum approximate optimization algorithm tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: preprint user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2024' ... --- _id: '13963' abstract: - lang: eng 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. 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]." article_number: '054201' article_processing_charge: Yes (in subscription journal) article_type: original arxiv: 1 author: - first_name: Pietro full_name: Brighi, Pietro id: 4115AF5C-F248-11E8-B48F-1D18A9856A87 last_name: Brighi orcid: 0000-0002-7969-2729 - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Dmitry A. full_name: Abanin, Dmitry A. last_name: Abanin - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Brighi P, Ljubotina M, Abanin DA, Serbyn M. Many-body localization proximity effect in a two-species bosonic Hubbard model. Physical Review B. 2023;108(5). doi:10.1103/physrevb.108.054201 apa: Brighi, P., Ljubotina, M., Abanin, D. A., & Serbyn, M. (2023). Many-body localization proximity effect in a two-species bosonic Hubbard model. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.108.054201 chicago: Brighi, Pietro, Marko Ljubotina, Dmitry A. Abanin, and Maksym Serbyn. “Many-Body Localization Proximity Effect in a Two-Species Bosonic Hubbard Model.” Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/physrevb.108.054201. ieee: P. Brighi, M. Ljubotina, D. A. Abanin, and M. Serbyn, “Many-body localization proximity effect in a two-species bosonic Hubbard model,” Physical Review B, vol. 108, no. 5. American Physical Society, 2023. 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.” Physical Review B, vol. 108, no. 5, 054201, American Physical Society, 2023, doi:10.1103/physrevb.108.054201. short: P. Brighi, M. Ljubotina, D.A. Abanin, M. Serbyn, Physical Review B 108 (2023). corr_author: '1' date_created: 2023-08-05T18:25:22Z date_published: 2023-08-01T00:00:00Z date_updated: 2025-04-14T07:52:06Z day: '01' ddc: - '530' department: - _id: MaSe doi: 10.1103/physrevb.108.054201 ec_funded: 1 external_id: arxiv: - '2303.16876' file: - access_level: open_access checksum: f763000339b5fd543c14377109920690 content_type: application/pdf creator: dernst date_created: 2023-08-07T09:48:08Z date_updated: 2023-08-07T09:48:08Z file_id: '13981' file_name: 2023_PhysRevB_Brighi.pdf file_size: 3051398 relation: main_file success: 1 file_date_updated: 2023-08-07T09:48:08Z has_accepted_license: '1' intvolume: ' 108' issue: '5' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Many-body localization proximity effect in a two-species bosonic Hubbard model tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 108 year: '2023' ... --- _id: '14320' abstract: - lang: eng 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. 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. article_number: '125411' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Paul M full_name: Henderson, Paul M id: 13C09E74-18D9-11E9-8878-32CFE5697425 last_name: Henderson orcid: 0000-0002-5198-7445 - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Alexander A. full_name: Zibrov, Alexander A. last_name: Zibrov - first_name: Andrea F. full_name: Young, Andrea F. last_name: Young - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 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. Physical Review B. 2023;108(12). doi:10.1103/physrevb.108.125411' apa: 'Henderson, P. M., Ghazaryan, A., Zibrov, A. A., Young, A. F., & Serbyn, M. (2023). Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.108.125411' 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.” Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/physrevb.108.125411.' 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,” Physical Review B, vol. 108, no. 12. American Physical Society, 2023.' 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.' mla: 'Henderson, Paul M., et al. “Deep Learning Extraction of Band Structure Parameters from Density of States: A Case Study on Trilayer Graphene.” Physical Review B, vol. 108, no. 12, 125411, American Physical Society, 2023, doi:10.1103/physrevb.108.125411.' short: P.M. Henderson, A. Ghazaryan, A.A. Zibrov, A.F. Young, M. Serbyn, Physical Review B 108 (2023). date_created: 2023-09-12T07:12:12Z date_published: 2023-09-15T00:00:00Z date_updated: 2023-09-20T09:38:24Z day: '15' department: - _id: MaSe - _id: ChLa - _id: MiLe doi: 10.1103/physrevb.108.125411 external_id: arxiv: - '2210.06310' intvolume: ' 108' issue: '12' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2210.06310 month: '09' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: 'Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 108 year: '2023' ... --- _id: '14334' 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. 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)." article_number: '093' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Pietro full_name: Brighi, Pietro id: 4115AF5C-F248-11E8-B48F-1D18A9856A87 last_name: Brighi orcid: 0000-0002-7969-2729 - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Brighi P, Ljubotina M, Serbyn M. Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. SciPost Physics. 2023;15(3). doi:10.21468/scipostphys.15.3.093 apa: Brighi, P., Ljubotina, M., & Serbyn, M. (2023). Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. SciPost Physics. SciPost Foundation. https://doi.org/10.21468/scipostphys.15.3.093 chicago: Brighi, Pietro, Marko Ljubotina, and Maksym Serbyn. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving Quantum East Models.” SciPost Physics. SciPost Foundation, 2023. https://doi.org/10.21468/scipostphys.15.3.093. ieee: P. Brighi, M. Ljubotina, and M. Serbyn, “Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models,” SciPost Physics, vol. 15, no. 3. SciPost Foundation, 2023. 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. mla: Brighi, Pietro, et al. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving Quantum East Models.” SciPost Physics, vol. 15, no. 3, 093, SciPost Foundation, 2023, doi:10.21468/scipostphys.15.3.093. short: P. Brighi, M. Ljubotina, M. Serbyn, SciPost Physics 15 (2023). corr_author: '1' date_created: 2023-09-14T13:08:23Z date_published: 2023-09-13T00:00:00Z date_updated: 2025-04-14T07:52:05Z day: '13' ddc: - '530' department: - _id: MaSe doi: 10.21468/scipostphys.15.3.093 ec_funded: 1 external_id: arxiv: - '2210.15607' file: - access_level: open_access checksum: 4cef6a8021f6b6c47ab2f2f2b1387ac2 content_type: application/pdf creator: dernst date_created: 2023-09-20T10:46:10Z date_updated: 2023-09-20T10:46:10Z file_id: '14350' file_name: 2023_SciPostPhysics_Brighi.pdf file_size: 4866506 relation: main_file success: 1 file_date_updated: 2023-09-20T10:46:10Z has_accepted_license: '1' intvolume: ' 15' issue: '3' keyword: - General Physics and Astronomy language: - iso: eng month: '09' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: SciPost Physics publication_identifier: issn: - 2542-4653 publication_status: published publisher: SciPost Foundation quality_controlled: '1' related_material: record: - id: '12750' relation: earlier_version status: public scopus_import: '1' status: public title: Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2023' ... --- _id: '12790' 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. 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. article_number: '104502' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Tobias full_name: Holder, Tobias last_name: Holder - first_name: Erez full_name: Berg, Erez last_name: Berg - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Ghazaryan A, Holder T, Berg E, Serbyn M. Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity. Physical Review B. 2023;107(10). doi:10.1103/PhysRevB.107.104502 apa: Ghazaryan, A., Holder, T., Berg, E., & Serbyn, M. (2023). Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.107.104502 chicago: Ghazaryan, Areg, Tobias Holder, Erez Berg, and Maksym Serbyn. “Multilayer Graphenes as a Platform for Interaction-Driven Physics and Topological Superconductivity.” Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/PhysRevB.107.104502. ieee: A. Ghazaryan, T. Holder, E. Berg, and M. Serbyn, “Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity,” Physical Review B, vol. 107, no. 10. American Physical Society, 2023. 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. mla: Ghazaryan, Areg, et al. “Multilayer Graphenes as a Platform for Interaction-Driven Physics and Topological Superconductivity.” Physical Review B, vol. 107, no. 10, 104502, American Physical Society, 2023, doi:10.1103/PhysRevB.107.104502. short: A. Ghazaryan, T. Holder, E. Berg, M. Serbyn, Physical Review B 107 (2023). date_created: 2023-04-02T22:01:10Z date_published: 2023-03-01T00:00:00Z date_updated: 2023-08-01T13:59:29Z day: '01' department: - _id: MaSe - _id: MiLe doi: 10.1103/PhysRevB.107.104502 external_id: arxiv: - '2211.02492' isi: - '000945526400003' intvolume: ' 107' isi: 1 issue: '10' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2211.02492 month: '03' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News on the ISTA website relation: press_release url: https://ista.ac.at/en/news/reaching-superconductivity-layer-by-layer/ scopus_import: '1' status: public title: Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 107 year: '2023' ... --- _id: '12839' abstract: - lang: eng 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. 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]." article_number: '011033' article_processing_charge: No article_type: original author: - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Jean Yves full_name: Desaules, Jean Yves last_name: Desaules - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Zlatko full_name: Papić, Zlatko last_name: Papić citation: ama: Ljubotina M, Desaules JY, Serbyn M, Papić Z. Superdiffusive energy transport in kinetically constrained models. Physical Review X. 2023;13(1). doi:10.1103/PhysRevX.13.011033 apa: Ljubotina, M., Desaules, J. Y., Serbyn, M., & Papić, Z. (2023). Superdiffusive energy transport in kinetically constrained models. Physical Review X. American Physical Society. https://doi.org/10.1103/PhysRevX.13.011033 chicago: Ljubotina, Marko, Jean Yves Desaules, Maksym Serbyn, and Zlatko Papić. “Superdiffusive Energy Transport in Kinetically Constrained Models.” Physical Review X. American Physical Society, 2023. https://doi.org/10.1103/PhysRevX.13.011033. ieee: M. Ljubotina, J. Y. Desaules, M. Serbyn, and Z. Papić, “Superdiffusive energy transport in kinetically constrained models,” Physical Review X, vol. 13, no. 1. American Physical Society, 2023. ista: Ljubotina M, Desaules JY, Serbyn M, Papić Z. 2023. Superdiffusive energy transport in kinetically constrained models. Physical Review X. 13(1), 011033. mla: Ljubotina, Marko, et al. “Superdiffusive Energy Transport in Kinetically Constrained Models.” Physical Review X, vol. 13, no. 1, 011033, American Physical Society, 2023, doi:10.1103/PhysRevX.13.011033. short: M. Ljubotina, J.Y. Desaules, M. Serbyn, Z. Papić, Physical Review X 13 (2023). corr_author: '1' date_created: 2023-04-16T22:01:09Z date_published: 2023-03-07T00:00:00Z date_updated: 2025-04-14T07:52:07Z day: '07' ddc: - '530' department: - _id: MaSe doi: 10.1103/PhysRevX.13.011033 ec_funded: 1 external_id: isi: - '000957625700001' file: - access_level: open_access checksum: ee060cea609af79bba7af74b1ce28078 content_type: application/pdf creator: dernst date_created: 2023-04-17T08:36:53Z date_updated: 2023-04-17T08:36:53Z file_id: '12845' file_name: 2023_PhysReviewX_Ljubotina.pdf file_size: 1958523 relation: main_file success: 1 file_date_updated: 2023-04-17T08:36:53Z has_accepted_license: '1' intvolume: ' 13' isi: 1 issue: '1' language: - iso: eng month: '03' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: Physical Review X publication_identifier: eissn: - 2160-3308 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Superdiffusive energy transport in kinetically constrained models tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 13 year: '2023' ... --- _id: '13125' abstract: - lang: eng 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. ' 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). ' article_number: '062404' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Stefan full_name: Sack, Stefan id: dd622248-f6e0-11ea-865d-ce382a1c81a5 last_name: Sack orcid: 0000-0001-5400-8508 - first_name: Raimel A full_name: Medina Ramos, Raimel A id: CE680B90-D85A-11E9-B684-C920E6697425 last_name: Medina Ramos orcid: 0000-0002-5383-2869 - first_name: Richard full_name: Kueng, Richard last_name: Kueng - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Sack S, Medina Ramos RA, Kueng R, Serbyn M. Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement. Physical Review A. 2023;107(6). doi:10.1103/physreva.107.062404 apa: Sack, S., Medina Ramos, R. A., Kueng, R., & Serbyn, M. (2023). Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement. Physical Review A. American Physical Society. https://doi.org/10.1103/physreva.107.062404 chicago: Sack, Stefan, Raimel A Medina Ramos, Richard Kueng, and Maksym Serbyn. “Recursive Greedy Initialization of the Quantum Approximate Optimization Algorithm with Guaranteed Improvement.” Physical Review A. American Physical Society, 2023. https://doi.org/10.1103/physreva.107.062404. ieee: S. Sack, R. A. Medina Ramos, R. Kueng, and M. Serbyn, “Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement,” Physical Review A, vol. 107, no. 6. American Physical Society, 2023. 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. mla: Sack, Stefan, et al. “Recursive Greedy Initialization of the Quantum Approximate Optimization Algorithm with Guaranteed Improvement.” Physical Review A, vol. 107, no. 6, 062404, American Physical Society, 2023, doi:10.1103/physreva.107.062404. short: S. Sack, R.A. Medina Ramos, R. Kueng, M. Serbyn, Physical Review A 107 (2023). corr_author: '1' date_created: 2023-06-07T06:57:32Z date_published: 2023-06-02T00:00:00Z date_updated: 2026-05-04T22:30:22Z day: '02' ddc: - '530' department: - _id: MaSe doi: 10.1103/physreva.107.062404 ec_funded: 1 external_id: arxiv: - '2209.01159' isi: - '001016927100012' file: - access_level: open_access checksum: 0d71423888eeccaa60d8f41197f26306 content_type: application/pdf creator: dernst date_created: 2023-06-13T07:28:36Z date_updated: 2023-06-13T07:28:36Z file_id: '13131' file_name: 2023_PhysRevA_Sack.pdf file_size: 2524611 relation: main_file success: 1 file_date_updated: 2023-06-13T07:28:36Z has_accepted_license: '1' intvolume: ' 107' isi: 1 issue: '6' language: - iso: eng month: '06' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: record: - id: '17208' relation: dissertation_contains status: public - id: '14622' relation: dissertation_contains status: public scopus_import: '1' status: public title: Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 107 year: '2023' ... --- _id: '12259' abstract: - lang: eng 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. ' 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.”' article_number: '093138' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: George H full_name: Choueiri, George H id: 448BD5BC-F248-11E8-B48F-1D18A9856A87 last_name: Choueiri - first_name: Balachandra full_name: Suri, Balachandra id: 47A5E706-F248-11E8-B48F-1D18A9856A87 last_name: Suri - first_name: Jack full_name: Merrin, Jack id: 4515C308-F248-11E8-B48F-1D18A9856A87 last_name: Merrin orcid: 0000-0001-5145-4609 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Björn full_name: Hof, Björn id: 3A374330-F248-11E8-B48F-1D18A9856A87 last_name: Hof orcid: 0000-0003-2057-2754 - first_name: Nazmi B full_name: Budanur, Nazmi B id: 3EA1010E-F248-11E8-B48F-1D18A9856A87 last_name: Budanur orcid: 0000-0003-0423-5010 citation: ama: 'Choueiri GH, Suri B, Merrin J, Serbyn M, Hof B, Budanur NB. Crises and chaotic scattering in hydrodynamic pilot-wave experiments. Chaos: An Interdisciplinary Journal of Nonlinear Science. 2022;32(9). doi:10.1063/5.0102904' apa: 'Choueiri, G. H., Suri, B., Merrin, J., Serbyn, M., Hof, B., & Budanur, N. B. (2022). Crises and chaotic scattering in hydrodynamic pilot-wave experiments. Chaos: An Interdisciplinary Journal of Nonlinear Science. AIP Publishing. https://doi.org/10.1063/5.0102904' 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.” Chaos: An Interdisciplinary Journal of Nonlinear Science. AIP Publishing, 2022. https://doi.org/10.1063/5.0102904.' 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,” Chaos: An Interdisciplinary Journal of Nonlinear Science, vol. 32, no. 9. AIP Publishing, 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.' mla: 'Choueiri, George H., et al. “Crises and Chaotic Scattering in Hydrodynamic Pilot-Wave Experiments.” Chaos: An Interdisciplinary Journal of Nonlinear Science, vol. 32, no. 9, 093138, AIP Publishing, 2022, doi:10.1063/5.0102904.' short: 'G.H. Choueiri, B. Suri, J. Merrin, M. Serbyn, B. Hof, N.B. Budanur, Chaos: An Interdisciplinary Journal of Nonlinear Science 32 (2022).' date_created: 2023-01-16T09:58:16Z date_published: 2022-09-26T00:00:00Z date_updated: 2025-06-11T13:41:34Z day: '26' ddc: - '530' department: - _id: MaSe - _id: BjHo - _id: NanoFab doi: 10.1063/5.0102904 external_id: arxiv: - '2206.01531' isi: - '000861009600005' pmid: - '36182399' file: - access_level: open_access checksum: 17881eff8b21969359a2dd64620120ba content_type: application/pdf creator: dernst date_created: 2023-01-30T09:41:12Z date_updated: 2023-01-30T09:41:12Z file_id: '12445' file_name: 2022_Chaos_Choueiri.pdf file_size: 3209644 relation: main_file success: 1 file_date_updated: 2023-01-30T09:41:12Z has_accepted_license: '1' intvolume: ' 32' isi: 1 issue: '9' keyword: - Applied Mathematics - General Physics and Astronomy - Mathematical Physics - Statistical and Nonlinear Physics language: - iso: eng month: '09' oa: 1 oa_version: Published Version pmid: 1 publication: 'Chaos: An Interdisciplinary Journal of Nonlinear Science' publication_identifier: eissn: - 1089-7682 issn: - 1054-1500 publication_status: published publisher: AIP Publishing quality_controlled: '1' scopus_import: '1' status: public title: Crises and chaotic scattering in hydrodynamic pilot-wave experiments tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 32 year: '2022' ... --- _id: '12276' abstract: - lang: eng 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. 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]. article_number: '030343' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Marko full_name: Ljubotina, Marko id: F75EE9BE-5C90-11EA-905D-16643DDC885E last_name: Ljubotina orcid: 0000-0003-0038-7068 - first_name: Barbara full_name: Roos, Barbara id: 5DA90512-D80F-11E9-8994-2E2EE6697425 last_name: Roos orcid: 0000-0002-9071-5880 - first_name: Dmitry A. full_name: Abanin, Dmitry A. last_name: Abanin - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Ljubotina M, Roos B, Abanin DA, Serbyn M. Optimal steering of matrix product states and quantum many-body scars. PRX Quantum. 2022;3(3). doi:10.1103/prxquantum.3.030343 apa: Ljubotina, M., Roos, B., Abanin, D. A., & Serbyn, M. (2022). Optimal steering of matrix product states and quantum many-body scars. PRX Quantum. American Physical Society. https://doi.org/10.1103/prxquantum.3.030343 chicago: Ljubotina, Marko, Barbara Roos, Dmitry A. Abanin, and Maksym Serbyn. “Optimal Steering of Matrix Product States and Quantum Many-Body Scars.” PRX Quantum. American Physical Society, 2022. https://doi.org/10.1103/prxquantum.3.030343. ieee: M. Ljubotina, B. Roos, D. A. Abanin, and M. Serbyn, “Optimal steering of matrix product states and quantum many-body scars,” PRX Quantum, vol. 3, no. 3. American Physical Society, 2022. 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. mla: Ljubotina, Marko, et al. “Optimal Steering of Matrix Product States and Quantum Many-Body Scars.” PRX Quantum, vol. 3, no. 3, 030343, American Physical Society, 2022, doi:10.1103/prxquantum.3.030343. short: M. Ljubotina, B. Roos, D.A. Abanin, M. Serbyn, PRX Quantum 3 (2022). corr_author: '1' date_created: 2023-01-16T10:01:56Z date_published: 2022-09-23T00:00:00Z date_updated: 2025-04-14T07:52:07Z day: '23' ddc: - '530' department: - _id: MaSe - _id: RoSe doi: 10.1103/prxquantum.3.030343 ec_funded: 1 external_id: arxiv: - '2204.02899' file: - access_level: open_access checksum: ef8f0a1b5a019b3958009162de0fa4c3 content_type: application/pdf creator: dernst date_created: 2023-01-30T11:02:50Z date_updated: 2023-01-30T11:02:50Z file_id: '12457' file_name: 2022_PRXQuantum_Ljubotina.pdf file_size: 7661905 relation: main_file success: 1 file_date_updated: 2023-01-30T11:02:50Z has_accepted_license: '1' intvolume: ' 3' issue: '3' keyword: - General Medicine language: - iso: eng month: '09' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: PRX Quantum publication_identifier: eissn: - 2691-3399 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Optimal steering of matrix product states and quantum many-body scars tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 3 year: '2022' ...