原子质心运动和场模结构对场熵压缩特性的影响  

Influence of the motion of atomic mass centre and field mode structure on the field entropy squeezing

作　　者：廖湘萍[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

出　　处：《量子电子学报》2005年第2期212-216,共5页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金资助项目(19874020)湖南省教育厅青年基金资助项目(04B070)

摘　　要：利用量子信息熵理论,研究了J-C模型中原子质心运动和场模结构及光场的初始平均光子数对场熵压缩特性的影响,结果表明:原子质心运动导敛场熵压缩的周期性演化,场模结构参量决定其周期的大小; 随着场模结构参量的增大,场熵压缩的演化周期缩短,压缩时间延长;适当选择系统参量,可获得持续的熵压缩效应。The influence of the motion of atomic mass centre, field mode structure and initial mean photon number on the field entropy squeezing is investigated by means of the theory of quantum information entropy. It is shown that the motion of atomic mass center leads to the periodic evolution of the field entropy squeezing and this period depends on the field mode structure parameter; an increase in field-mode structure parameter results in not only shortening of the evolution period of the field entropy squeezing but also prolonging of the squeezing time; the field may exhibit long time entropy squeezing effect for some choieed system parameters.

关 键 词：量子光学 场熵压缩 原子质心运动 场模结构 

分 类 号：O431[机械工程—光学工程]