Witnessing nonequilibrium entanglement dynamics in a strongly correlated fermionic chain

Baykusheva DR, Kalthoff MH, Hofmann D, Claassen M, Kennes DM, Sentef MA, Mitrano M. 2023. Witnessing nonequilibrium entanglement dynamics in a strongly correlated fermionic chain. Physical Review Letters. 130(10), 106902.

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Author
Baykusheva, Denitsa RangelovaISTA; Kalthoff, Mona H.; Hofmann, Damian; Claassen, Martin; Kennes, Dante M.; Sentef, Michael A.; Mitrano, Matteo

Corresponding author has ISTA affiliation

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.
Publishing Year
Date Published
2023-03-10
Journal Title
Physical Review Letters
Publisher
American Physical Society
Volume
130
Issue
10
Article Number
106902
ISSN
eISSN
IST-REx-ID

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Baykusheva DR, Kalthoff MH, Hofmann D, et al. Witnessing nonequilibrium entanglement dynamics in a strongly correlated fermionic chain. Physical Review Letters. 2023;130(10). doi:10.1103/physrevlett.130.106902
Baykusheva, D. R., Kalthoff, M. H., Hofmann, D., Claassen, M., Kennes, D. M., Sentef, M. A., & Mitrano, M. (2023). Witnessing nonequilibrium entanglement dynamics in a strongly correlated fermionic chain. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.130.106902
Baykusheva, Denitsa Rangelova, Mona H. Kalthoff, Damian Hofmann, Martin Claassen, Dante M. Kennes, Michael A. Sentef, and Matteo Mitrano. “Witnessing Nonequilibrium Entanglement Dynamics in a Strongly Correlated Fermionic Chain.” Physical Review Letters. American Physical Society, 2023. https://doi.org/10.1103/physrevlett.130.106902.
D. R. Baykusheva et al., “Witnessing nonequilibrium entanglement dynamics in a strongly correlated fermionic chain,” Physical Review Letters, vol. 130, no. 10. American Physical Society, 2023.
Baykusheva DR, Kalthoff MH, Hofmann D, Claassen M, Kennes DM, Sentef MA, Mitrano M. 2023. Witnessing nonequilibrium entanglement dynamics in a strongly correlated fermionic chain. Physical Review Letters. 130(10), 106902.
Baykusheva, Denitsa Rangelova, et al. “Witnessing Nonequilibrium Entanglement Dynamics in a Strongly Correlated Fermionic Chain.” Physical Review Letters, vol. 130, no. 10, 106902, American Physical Society, 2023, doi:10.1103/physrevlett.130.106902.
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PMID: 36962013
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