Semiclassical Phase-Space Dynamics of Emitter Ensembles with Local Dissipation

Abstract:We establish that permutation-invariant emitter ensembles with local dissipation admit a semiclassical description on the 4D phase space of a single variable-length collective spin, yielding a scalable truncated Wigner approximation (TWA) for ensemble dynamics. The TWA captures nonlinear dynamics and nonclassical signatures without prescribing low-order closures of correlations. We cast a class of spatially extended emitter systems as interacting ensembles tractable in the TWA to show how strong fluctuations shape directionality in cooperative emission from a pumped chain containing tens of thousands of emitters, using a few hundred phase-space variables. Our results offer a unified description of collective dynamics beyond the classical limit for emitter ensembles.

Revisions of text body and additional results. Added supplementary Material

arXiv:2602.14025 [quant-ph]

(or arXiv:2602.14025v3 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2602.14025 Focus to learn more arXiv-issued DOI via DataCite

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