Phase-modulated quadrature squeezing in two coupled cavities containing a two-level system
Li Hao-Zhen1, 2, †, Zeng Ran1, Zhou Xue-Fang1, Bi Mei-Hua1, Xu Jing-Ping2, ‡, Yang Ya-Ping2
       

Schematic diagram of a two-level atom coupled to two single mode cavities with coupling strengths g1 and g2, respectively. J denotes the coupling strength between cavity 1 and cavity 2, ωa denotes the transition frequency of the two-level atom, Sin and Sout represent the input and output of an external probe field, respectively.