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- W4308165022 abstract "Photon-mediated interactions within an excited ensemble of emitters can result in Dicke superradiance, where the emission rate is greatly enhanced, manifesting as a high-intensity burst at short times. The superradiant burst is most commonly observed in systems with long-range interactions between the emitters, although the minimal interaction range remains unknown. Here, we prove that for an arbitrary ordered array with only nearest-neighbor interactions in all dimensions, the condition for a superradiant burst violates the positivity of the density matrix and is thus not physically observable. We show that Dicke superradiance requires minimally the inclusion of next-nearest-neighbor interactions. For exponentially decaying interactions, the critical coupling is found to be asymptotically independent of the number of emitters in all dimensions, thereby defining the threshold interaction range where the collective enhancement balances out the decoherence effects. Our findings provide key physical insights to the understanding of collective decay in many-body quantum systems, and the designing of superradiant emission in physical systems for applications such as energy harvesting and quantum sensing." @default.
- W4308165022 created "2022-11-08" @default.
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- W4308165022 date "2022-11-01" @default.
- W4308165022 modified "2023-09-26" @default.
- W4308165022 title "Dicke superradiance requires interactions beyond nearest-neighbors" @default.
- W4308165022 doi "https://doi.org/10.48550/arxiv.2211.00668" @default.
- W4308165022 hasPublicationYear "2022" @default.
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