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

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

2009-12-16

arxiv.org/abs/0912.3260v1

Phys. Rev. Lett 104, 130401 (2010)

Physics

Quantum Physics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.104.130401

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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