Probing the quantum phase transition in the Dicke model through mechanical vibrations

Details Probing the quantum phase transition in the Dicke model through mechanical vibrations Probing the quantum phase transition in the Dicke model through mechanical vibrations

2010-08-02

arxiv.org/abs/1008.0372v2

Phys. Rev. A 82, 063801 (2010)

Physics

Quantum Physics

6 pages, 3 figures, final version

Scientific paper

This paper is concerned with quantum dynamics of a system coupled to a critical reservoir. In this context, we employ the Dicke model which is known to exhibit a super radiant quantum phase transition (QPT) and we allow one of the mirrors to move under a linear restoring force. The electromagnetic field couples to the movable mirror though radiation pressure just like in typical optomechanical setups. We show that, in the thermodynamical limit, the super-radiant phase induces a classical driving force on the mirror without causing decoherence.

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