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.; Mitrano, M.

doi:10.1103/PhysRevLett.130.106902

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Witnessing Nonequilibrium Entanglement Dynamics in a Strongly Correlated Fermionic Chain

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Kalthoff, M.
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;

/persons/resource/persons241274

Hofmann, D.
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;

Kennes, D. M.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science (CFEL);
Institut für Theorie der Statistischen Physik, RWTH Aachen University, 52056 Aachen, Germany and JARA-Fundamentals of Future Information Technology;

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);

External Resource

https://arxiv.org/abs/2209.02081
(Preprint)

https://doi.org/10.1103/PhysRevLett.130.106902
(Publisher version)

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PhysRevLett.130.106902.pdf
(Publisher version), 973KB

Supplementary Material (public)

supplement.pdf
(Supplementary material), 8MB

Citation

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.

Cite as: https://hdl.handle.net/21.11116/0000-000C-B99A-6

Abstract

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.