Probing the quantum phase transition in the Dicke model through mechanical vibrations
Probing the quantum phase transition in the Dicke model through mechanical vibrations
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DOI：
10.1103/physreva.82.063801
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发表时间：
2010-08
影响因子：
2.9
通讯作者：
J. P. Santos;K. Furuya;F. Semião
中科院分区：
文献类型：
--
作者：
J. P. Santos;K. Furuya;F. Semião
本文研究了临界储层耦合系统的量子动力学问题。在这种情况下，我们采用Dicke模型，该模型已知表现出超辐射量子相变（QPT），我们允许其中一个镜子在线性恢复力下移动。电磁场通过辐射压力耦合到可移动的镜子上，就像典型的光学机械装置一样。我们证明，在热力学极限下，超辐射相位在反射镜上产生经典驱动力而不引起退相干。
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 superradiant 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 through radiation pressure just like in typical optomechanical setups. We show that, in the thermodynamical limit, the superradiant phase induces a classical driving force on the mirror without causing decoherence.