论文标题
在超级相过渡临界点处的完美固有挤压
Perfect Intrinsic Squeezing at the Superradiant Phase Transition Critical Point
论文作者
论文摘要
发现由DICKE模型描述的光子耦合系统的基态被发现在超级相变（SRPT）的量子临界点上完全挤压。在存在反向旋转光子原子耦合的情况下，基态在基于光子和原子集体激发的基础上以两种模式挤压真空表示。量子波动以两种模式基础的差异在SRPT临界点消失，其共轭波动有所不同，理想情况下满足了Heisenberg的不确定性原理。
The ground state of the photon-matter coupled system described by the Dicke model is found to be perfectly squeezed at the quantum critical point of the superradiant phase transition (SRPT). In the presence of the counter-rotating photon-atom coupling, the ground state is analytically expressed as a two-mode squeezed vacuum in the basis of photons and atomic collective excitations. The variance of a quantum fluctuation in the two-mode basis vanishes at the SRPT critical point, with its conjugate fluctuation diverging, ideally satisfying the Heisenberg uncertainty principle.
