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arXiv · 2110.11288

Superradiance and subradiance in inverted atomic arrays

Oriol Rubies-Bigorda·Susanne F. Yelin
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Abstract

Superradiance and subradiance are collective effects that emerge from coherent interactions between quantum emitters. Due to their many-body nature, theoretical studies of extended samples with length larger than the atomic transition wavelength are usually restricted to their early time behavior or to the few-excitation limit. We use herein a mean-field approach to reduce the complex many-body system to an effective two-atom master equation that includes all correlations up to second order and that can be numerically propagated in time. We find that three-dimensional and two-dimensional inverted atomic arrays sustain superradiance below a critical lattice spacing and quantify the scaling of the superradiant peak for both dimensionalities. Finally, we study the late-time dynamics of the system and demonstrate that a subradiant phase appears before the system finally relaxes.

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Oriol Rubies-Bigorda, Susanne F. Yelin. 2022-12-01. Superradiance and subradiance in inverted atomic arrays. https://doi.org/10.1103/physreva.106.053717

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