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  Witnessing Nonequilibrium Entanglement Dynamics in a Strongly Correlated Fermionic Chain

Baykusheva, D. R., Kalthoff, M., Hofmann, D., Claassen, M., Kennes, D. M., Sentef, M. A., et al. (2023). Witnessing Nonequilibrium Entanglement Dynamics in a Strongly Correlated Fermionic Chain. Physical Review Letters, 130(10): 106902. doi:10.1103/PhysRevLett.130.106902.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-000C-B99A-6 Versions-Permalink: https://hdl.handle.net/21.11116/0000-000C-B99E-2
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PhysRevLett.130.106902.pdf (Verlagsversion), 973KB
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https://hdl.handle.net/21.11116/0000-000C-B99C-4
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2023
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© American Physical Society
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https://hdl.handle.net/21.11116/0000-000C-B99D-3
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Supplemental Material: The Supplementary Material includes details on finite size effects, time-frequency and Kibble-Zurek analysis of the nonequilibrium QFI, and additional details about Lindbladian and thermal state evolution.
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https://arxiv.org/abs/2209.02081 (Preprint)
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https://doi.org/10.1103/PhysRevLett.130.106902 (Verlagsversion)
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 Urheber:
Baykusheva, D. R.1, Autor
Kalthoff, M.2, 3, 4, Autor           
Hofmann, D.2, 3, 4, Autor           
Claassen, M.5, Autor
Kennes, D. M.3, 6, 7, Autor
Sentef, M. A.2, 3, Autor
Mitrano, M.1, Autor
Affiliations:
1Department of Physics, Harvard University, ou_persistent22              
2Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
3Center for Free-Electron Laser Science (CFEL), ou_persistent22              
4International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266714              
5Department of Physics and Astronomy, University of Pennsylvania, ou_persistent22              
6Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
7Institut für Theorie der Statistischen Physik, RWTH Aachen University, 52056 Aachen, Germany and JARA-Fundamentals of Future Information Technology, ou_persistent22              

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 Zusammenfassung: Many-body entanglement in condensed matter systems can be diagnosed from equilibrium response functions through the use of entanglement witnesses and operator-specific quantum bounds. Here, we investigate the applicability of this approach for detecting entangled states in quantum systems driven out of equilibrium. We use a multipartite entanglement witness, the quantum Fisher information, to study the dynamics of a paradigmatic fermion chain undergoing a time-dependent change of the Coulomb interaction. Our results show that the quantum Fisher information is able to witness distinct signatures of multipartite entanglement both near and far from equilibrium that are robust against decoherence. We discuss implications of these findings for probing entanglement in light-driven quantum materials with time-resolved optical and x-ray scattering methods.

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Sprache(n): eng - English
 Datum: 2023-01-132022-08-212023-01-182023-03-062023-03-10
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: arXiv: 2209.02081
DOI: 10.1103/PhysRevLett.130.106902
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Projektname : We would like to thank S. R. Clark, J. Marino, Y. Wang, N. Yao, and P. Zoller for insightful discussions. This work was primarily supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Early Career Award Program, under Award No. DE-SC0022883. M. M. further acknowledges support by the Aramont Fellowship Fund for Emerging Science Research at Harvard University. D. R. B. was supported by the Swiss National Science Foundation through Project No. P400P2_194343. M. C. acknowledges support by NSF Grant No. DMR-2132591. D. M. K. acknowledges funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via Germany’s Excellence Strategy—Cluster of Excellence Matter and Light for Quantum Computing (ML4Q) EXC 2004/1—390534769 and within the RTG 1995. M. A. S. acknowledges financial support through the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via the Emmy Noether program (SE 2558/2). We also acknowledge support from the Max Planck-New York City Center for Non-Equilibrium Quantum Phenomena.
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Quelle 1

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Titel: Physical Review Letters
  Kurztitel : Phys. Rev. Lett.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Woodbury, N.Y. : American Physical Society
Seiten: - Band / Heft: 130 (10) Artikelnummer: 106902 Start- / Endseite: - Identifikator: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1