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Beyond Dicke superradiance: Universal scaling of the peak emission rate (2506.12649v1)

Published 14 Jun 2025 in quant-ph, cond-mat.str-el, and physics.atom-ph

Abstract: In quantum optics, superradiance is a phenomenon in which a system of $N$ fully excited quantum emitters radiate intense flashes of light during collective decay. However, computing its peak intensity for many spatially separated emitters remained challenging due to the exponential growth of the underlying Hilbert space with system size $N$. Derived from exact numerics, we present an analytically compact and easily computable formula for the peak photon emission rate of fully excited quantum emitter systems undergoing superradiant decay. The result applies to emitter configurations in any geometry and reveals a universal behavior: spatially extended quantum systems have a geometry-dependent optimal emitter number and always reach a peak photon emission rate that increases only linearly with $N$. Our results encompass quantum systems ranging from cold atomic gases and neutral-atom arrays to molecular aggregates and solid-state materials.

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