Raman跃迁中原子的熵压缩  

Entropy squeezing of atom in Raman transition

作　　者：靳丽娟[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》2005年第6期894-899,共6页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金资助项目(10374025)

摘　　要：运用量子信息熵理论研究了Raman跃迁中原子的熵压缩特性。讨论了系统初态参数对原子信息熵 压缩的影响。结果表明:信息熵压缩的分量数、压缩方向、压缩深度可以由原子的分布角、双模相干场相对位相 和平均光子数的选取来控制。结果证明了信息熵能实现对原子压缩效应的高灵敏量度。The atomic entropy squeezing in Raman transition is studied by means of quantum information entropy theory. The influences of the initial parameters of the system on the atomic information entropy squeezing are presented. It is shown that the squeezed component number, depth and squeezed direction of the information entropy squeezing can be controlled by choosing atomic distribution angle, the relative phase between the two-mode field and the different of the average photon number of the two field modes, respectively. It is also shown that quantum information entropy is a remarkable precision measure for the atomic squeezing.

关 键 词：量子光学 Raman跃迁 约化密度矩阵 原子熵压缩 

分 类 号：O431.2[机械工程—光学工程]