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arXiv · 0912.3260

The Dicke model phase transition in the quantum motion of a Bose-Einstein condensate in an optical cavity

D. Nagy·G. Konya·G. Szirmai·P. Domokos
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Abstract

We show that the motion of a laser-driven Bose-Einstein condensate in a high-finesse optical cavity realizes the spin-boson Dicke-model. The quantum phase transition of the Dicke-model from the normal to the superradiant phase corresponds to the self-organization of atoms from the homogeneous into a periodically patterned distribution above a critical driving strength. The fragility of the ground state due to photon measurement induced back action is calculated.

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D. Nagy, G. Konya, G. Szirmai, P. Domokos. 2009-12-16. The Dicke model phase transition in the quantum motion of a Bose-Einstein condensate in an optical cavity. https://doi.org/10.1103/physrevlett.104.130401

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