Persistent subradiant correlations in a random driven Dicke model
arXiv:2507.19467 · doi:10.1103/czf3-74sf
Abstract
We study theoretically the driven-dissipative dynamics of an array of two-level emitters, coupled to a single photonic mode, in the presence of disorder in the resonant frequencies. We introduce the notion of subradiant correlations in the dynamics, corresponding to the eigenstates of the Liouvillian with a low decay rate, that can also oscillate in time. While the usual collective subradiant states do not survive the emitter resonant frequency fluctuations, these subradiant correlations are immune to such a type of disorder. These long-living correlations exist in finite-size systems, when their lifetime is parametrically longer than in the so-called Dicke time crystal phase.
5 pages, 5 figures, 1 table + Supplemental Material 2 pages, 2 figures, 2 tables
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