摘要
The phase-modulated quadrature squeezing in the system that composed of two coupled cavities interacting with a two-level atom is investigated.The variances of the amplitude and phase quadrature of the output field are calculated.It turns out that the squeezing behaviors of the output field can be obviously modified due to the phase difference of the coupling strengths between the atom and the two cavities.The squeezing in one quadrature(i.e.,phase quadrature)can be transferred into another(i.e.,amplitude quadrature),or the quadrature squeezing located at the low-frequency region can be transferred into the high-frequency region by modulating the relative phase of the coupling strengths.Furthermore,the effects of the decay mismatch between the two cavities and the coupling mismatch between the atom and the cavities on the quadrature squeezing have been discussed.The results show that both the decay mismatch and the coupling mismatch play a positive role in generating better quadrature squeezing.
作者
Hao-Zhen Li
Ran Zeng
Xue-Fang Zhou
Mei-Hua Bi
Jing-Ping Xu
Ya-Ping Yang
李浩珍;曾然;周雪芳;毕美华;许静平;羊亚平(School of Communication Engineering,Hangzhou Dianzi University,Hangzhou 310018,China;Key Laboratory of Advanced Micro-Structured Materials of Ministry of Education,School of Physics Science and Engineering,Tongji University,Shanghai 200092,China)
基金
Project supported by the Fundamental Research Funds for the Provincial Universities of Zhejiang Province,China(Grant No.GK199900299012-015)
the National Natural Science Foundation of China(Grant Nos.11574229,11874287,and 11574068)
and the Science Fund from the Shanghai Science and Technology Committee,China(Grant No.18JC1410900).
