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  Cavity Light-Matter Entanglement through Quantum Fluctuations

Passetti, G., Eckhardt, C., Sentef, M. A., & Kennes, D. M. (2023). Cavity Light-Matter Entanglement through Quantum Fluctuations. Physical Review Letters, 131(2): 023601. doi:10.1103/PhysRevLett.131.023601.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-000D-763E-A Versions-Permalink: https://hdl.handle.net/21.11116/0000-000D-763F-9
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 Urheber:
Passetti, G.1, Autor
Eckhardt, C.1, 2, 3, 4, Autor           
Sentef, M. A.2, 3, 5, Autor
Kennes, D. M.1, 3, 6, Autor
Affiliations:
1Institut für Theorie der Statistischen Physik, RWTH Aachen University and JARA-Fundamentals of Future Information Technology, 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              
5H H Wills Physics Laboratory, University of Bristol, ou_persistent22              
6Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              

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 Zusammenfassung: The hybridization between light and matter forms the basis to achieve cavity control over quantum materials. In this Letter we investigate a cavity coupled to a quantum chain of interacting spinless fermions by numerically exact solutions and perturbative analytical expansions. We draw two important conclusions about such systems: (i) Specific quantum fluctuations of the matter system play a pivotal role in achieving entanglement between light and matter; and (ii) in turn, light-matter entanglement is a key ingredient to modify electronic properties by the cavity. We hypothesize that quantum fluctuations of those matter operators to which the cavity modes couple are a general prerequisite for light-matter entanglement in the ground state. Implications of our findings for light-matter-entangled phases, cavity-modified phase transitions in correlated systems, and measurement of light-matter entanglement through Kubo response functions are discussed.

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Sprache(n): eng - English
 Datum: 2022-12-142023-06-282023-07-132023-07-14
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: arXiv: 2212.03011
DOI: 10.1103/PhysRevLett.131.023601
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Projektname : We would like to thank Gian Marcello Andolina, Valentin Bruch, Fabio Cavaliere, Titas Chanda, Giuliano Chiriacò, Pavel Dolgriev, Francesco Grandi, Mohammad Hafezi, Angel Rubio, Frank Schlawin, and Lukas Weber for fruitful discussions. We acknowledge support 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. This work received funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—508440990. We also acknowledge support from the Max Planck-New York City Center for Non-Equilibrium Quantum Phenomena. M. A. S. acknowledges financial support through the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via the Emmy Noether program (SE 2558/2). Simulations were performed with computing resources granted by RWTH Aachen University under project rwth0926 and on the HPC system Cobra at the Max Planck Computing and Data Facility.
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Quelle 1

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Titel: Physical Review Letters
  Kurztitel : Phys. Rev. Lett.
Genre der Quelle: Zeitschrift
 Urheber:
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Ort, Verlag, Ausgabe: Woodbury, N.Y. : American Physical Society
Seiten: - Band / Heft: 131 (2) Artikelnummer: 023601 Start- / Endseite: - Identifikator: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1