非线性J-C模型中场的熵压缩  

Entropy squeezing of the field in the nonlinear J-C model

作　　者：吴琴[1] 方卯发[1] 

机构地区：[1]湖南师范大学物理与信息科学学院,湖南长沙410081

出　　处：《量子电子学报》2004年第5期633-637,共5页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(10374025)

摘　　要：运用量子信息熵理论研究了非线性Jaynes-Cummings模型中场的熵压缩特性,讨论了克尔介质与原子初态对场熵压缩的影响。结果表明强克尔介质相互作用可以产生深度压缩光,原子相干性也影响场熵压缩效应的存在和压缩深度。The field entropy squeezing properties in the nonlinear Jaynes-Cummings model are studied by means of quantum information entropy, and the influences of the nonlinear interaction of the Kerr medium with the model field and the initial state of atoms on the field entropy squeezing are discussed. It shows that the nonlinear interaction of the Kerr medium can lead to an increase in the squeezing depth. On the other hand, the squeezing time and the squeezing depth increases with the increase of the atomic distribution angle.

关 键 词：量子光学 非线性Jaynes—Cummings模型 约化密度矩阵 场熵压缩 

分 类 号：O431.2[机械工程—光学工程]