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arXiv · 1207.4238

Superradiant Solid in Cavity QED Coupled to a Lattice of Rydberg Gas

Xue-Feng Zhang·Qing Sun·Yu-Chuan Wen·Wu-Ming Liu·Sebastian Eggert·An-Chun Ji
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Abstract

We study an optical cavity coupled to a lattice of Rydberg atoms, which can be represented by a generalized Dicke model. We show that the competition between the atomic interaction and atom-light coupling induces a rich phase diagram. A novel "superradiant solid" (SRS) phase is found, where both the superradiance and crystalline orders coexist. Different from the normal second order superradiance (SR) transition, here both the Solid-1/2 and SRS to SR phase transitions are first order. These results are confirmed by the large scale quantum Monte Carlo simulations.

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Xue-Feng Zhang, Qing Sun, Yu-Chuan Wen, Wu-Ming Liu, Sebastian Eggert, An-Chun Ji. 2012-07-18. Superradiant Solid in Cavity QED Coupled to a Lattice of Rydberg Gas. https://doi.org/10.1103/physrevlett.110.090402

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