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Springer eBooks

Superradiant and Subradiant Behavior of the Overdamped Many-Atom Micromaser

Vasily V. Temnov, Mikhail I. Kolobov, Fritz Haake

Published Nov 16, 2007• 2 citations
Publisher
DOI
10.1007/3-540-40894-0_24

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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.