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Statut |
Confirmé |
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Série |
FORUM-ENS |
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Domaines |
cond-mat.stat-mech |
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Date |
Mercredi 22 Juin 2022 |
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Heure |
12:00 |
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Institut |
LPENS |
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Salle |
Conf IV |
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Nom de l'orateur |
Aron |
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Prenom de l'orateur |
Camille |
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Addresse email de l'orateur |
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Institution de l'orateur |
LPENS |
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Titre |
Transition to chaos in open quantum systems, non-Hermitian random matrices, and quantum impurity models. |
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Résumé |
Chaos sets a fundamental limit to quantum-information processing schemes. We work
in the framework of the (dissipative) Dicke model which is archetypal of symmetry-
breaking phase transitions in open quantum systems. We establish that the
Liouvillian describing the dynamics exhibits distinct spectral features of
integrable and chaotic character on the two sides of the critical point. The
latter are governed by the Ginibre unitary non-Hermitian random matrix ensemble.
We also study the onset of chaos in spatially extended systems relevant to quantum
optical devices. In particular, we propose a minimal single-site quantum impurity
modeling to capture their spectral properties. |
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Numéro de preprint arXiv |
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Fichiers attachés |
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