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Many-Body Radiative Decay in Strongly Interacting Rydberg Ensembles

Nill, Chris; Brandner, Kay; Olmos, Beatriz; Carollo, Federico; Lesanovsky, Igor

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Authors

Chris Nill

Beatriz Olmos

Federico Carollo



Abstract

When atoms are excited to high-lying Rydberg states they interact strongly with dipolar forces. The resulting state-dependent level shifts allow to study many-body systems displaying intriguing nonequilibrium phenomena, such as constrained spin systems, and are at the heart of numerous technological applications, e.g., in quantum simulation and computation platforms. Here, we show that these interactions have also a significant impact on dissipative effects caused by the inevitable coupling of Rydberg atoms to the surrounding electromagnetic field. We demonstrate that their presence modifies the frequency of the photons emitted from the Rydberg atoms, making it dependent on the local neighborhood of the emitting atom. Interactions among Rydberg atoms thus turn spontaneous emission into a many-body process which manifests, in a thermodynamically consistent Markovian setting, in the emergence of collective jump operators in the quantum master equation governing the dynamics. We discuss how this collective dissipation — stemming from a mechanism different from the much studied super- and sub-radiance — accelerates decoherence and affects dissipative phase transitions in Rydberg ensembles.

Journal Article Type Letter
Acceptance Date Nov 7, 2022
Online Publication Date Dec 9, 2022
Publication Date Dec 9, 2022
Deposit Date Nov 11, 2022
Publicly Available Date Dec 9, 2022
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Peer Reviewed Peer Reviewed
Volume 129
Issue 24
DOI https://doi.org/10.1103/physrevlett.129.243202
Public URL https://nottingham-repository.worktribe.com/output/13463457
Publisher URL https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.129.243202

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