论文标题
增强的光子挤压在两光子dicke模型中
Enhanced Photon Squeezing in Two-Photon Dicke Model
论文作者
论文摘要
我们探索在热力学极限中平均场近似下的两光子dicke模型中光子挤压的现象。光子挤压的强度在耦合强度与系统的基本频率之一的区域中最大化。该特定区域称为无界区域。只有在超级阶段才能观察到光子四倍体的挤压，在量子相位，挤压远远超出了量子临界点附近的标准量子极限和无界区域。但是，仅在后一种情况下才能获得延长的挤压。此外，我们探讨了光子在无限区域附近挤压的临界行为。
We explore the phenomena of quadrature squeezing of photons in the Two-Photon Dicke Model under the mean-field approximation in the thermodynamic limit. The strength of photon squeezing is maximized in the region where the coupling strength is of the same order of magnitude as one of the fundamental frequency of the system. This particular region is termed as the unbounded region. The squeezing of the photonic quadratures can be observed only in the superradiant phase where the squeezing is well beyond the standard quantum limit both near the quantum critical point as well as the unbounded region. However, prolonged squeezing is only obtained in the latter case. Furthermore, we explore the critical behavior of photon squeezing near the unbounded region.
