Cavity Light-Matter Entanglement through Quantum Fluctuations

Passetti, G.; Eckhardt, C.; Sentef, M. A.; Kennes, D. M.

doi:10.1103/PhysRevLett.131.023601

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Cavity Light-Matter Entanglement through Quantum Fluctuations

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Eckhardt, C.
Institut für Theorie der Statistischen Physik, RWTH Aachen University and JARA-Fundamentals of Future Information Technology;
Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science (CFEL);
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Sentef, M. A.
Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science (CFEL);
H H Wills Physics Laboratory, University of Bristol;

Kennes, D. M.
Institut für Theorie der Statistischen Physik, RWTH Aachen University and JARA-Fundamentals of Future Information Technology;
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science (CFEL);

External Resource

https://arxiv.org/abs/2212.03011
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https://doi.org/10.1103/PhysRevLett.131.023601
(出版社版)

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2212.03011.pdf
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supplemental_material.pdf
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引用

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

引用: https://hdl.handle.net/21.11116/0000-000D-763E-A

要旨

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.