Dissipation-induced Sachdev-Ye-Kitaev physics in many-body cavity quantum electrodynamics
Abstract
We show that cavity quantum electrodynamics (QED) devices can realize dissipative Sachdev-Ye-Kitaev (SYK) universality, a paradigmatic setting for quantum chaos in open many-body systems. Ultracold fermions with disordered, all-to-all cavity-mediated interactions provide two complementary routes: atomic spontaneous emission in a single-mode cavity and photon leakage from a multimode cavity. Strikingly, both converge to the same non-Hermitian random-matrix universality despite originating from integrable and chaotic closed-system limits, respectively. In the single-mode cavity, dissipation creates quantum chaos from an integrable Hamiltonian. We trace this convergence to a tunable growth in dissipative rank, controlled, respectively, by the Lamb-Dicke parameter and the cavity-mode spacing. The integrability-to-chaos crossover is accompanied by a dynamical crossover from long-lived prethermal memory to rapid thermalization, visible in single-atom-resolved densities.
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BibTeX
@misc{pacchioni2026dissipationinduced,
title = {{Dissipation-induced Sachdev-Ye-Kitaev physics in many-body cavity quantum electrodynamics}},
author = {Pietro Pacchioni and Filippo Ferrari and Vincenzo Savona and Matteo Seclì},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2608.23557},
eprint = {2608.23557},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.23557},
}
RIS
TY - UNPB
TI - Dissipation-induced Sachdev-Ye-Kitaev physics in many-body cavity quantum electrodynamics
AU - Pietro Pacchioni
AU - Filippo Ferrari
AU - Vincenzo Savona
AU - Matteo Seclì
PY - 2026
DA - 2026/10/06
PB - arXiv
DO - 10.48550/arxiv.2608.23557
UR - https://arxiv.org/abs/2608.23557
AB - We show that cavity quantum electrodynamics (QED) devices can realize dissipative Sachdev-Ye-Kitaev (SYK) universality, a paradigmatic setting for quantum chaos in open many-body systems. Ultracold fermions with disordered, all-to-all cavity-mediated interactions provide two complementary routes: atomic spontaneous emission in a single-mode cavity and photon leakage from a multimode cavity. Strikingly, both converge to the same non-Hermitian random-matrix universality despite originating from integrable and chaotic closed-system limits, respectively. In the single-mode cavity, dissipation creates quantum chaos from an integrable Hamiltonian. We trace this convergence to a tunable growth in dissipative rank, controlled, respectively, by the Lamb-Dicke parameter and the cavity-mode spacing. The integrability-to-chaos crossover is accompanied by a dynamical crossover from long-lived prethermal memory to rapid thermalization, visible in single-atom-resolved densities.
ER -