Dicke-like quantum phase transition and vacuum entanglement with two coupled atomic ensembles

Details Dicke-like quantum phase transition and vacuum entanglement with two coupled atomic ensembles Dicke-like quantum phase transition and vacuum entanglement with two coupled atomic ensembles

2012-02-24

arxiv.org/abs/1202.5422v1

Phys. Rev. A 84, 033817 (2011)

Physics

Optics

Scientific paper

10.1103/PhysRevA.84.033817

We study the coherent cooperative phenomena of the system composed of two interacting atomic ensembles in the thermodynamic limit. Remarkably, the system exhibits the Dicke-like quantum phase transition and entanglement behavior although the governing Hamiltonian is fundamentally different from the spin-boson Dicke Hamiltonian, offering the opportunity for investigating collective matter-light dynamics with pure matter waves. The model can be realized with two Bose-Einstein condensates or atomic ensembles trapped in two optical cavities coupled to each other. The interaction between the two separate samples is induced by virtual photon exchange.

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