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arXiv · 1305.0065

Dissipative Dicke model with non-linear atom-photon interaction

A L Grimsmo·A S Parkins
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Abstract

We study a generalized Dicke model, as recently realized in an atomic quantum gas experiment, describing the collective interaction of N two-level atoms with a single cavity mode. The model takes account of dissipation of the cavity field, and includes a non-linear atom-photon coupling, not present in the conventional Dicke model. We extend previous theoretical investigations of a semiclassical model by including all quantum effects and considering finite atom number N . Our results show good agreement between quantum expectation values and the semiclassical model as N is increased, but also show exotic behaviour for the corresponding quantum state as the non-linear atom-photon coupling is varied.

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A L Grimsmo, A S Parkins. 2013-05-01. Dissipative Dicke model with non-linear atom-photon interaction. https://doi.org/10.1088/0953-4075%2F46%2F22%2F224012

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