非线性Jaynes-Cummings模型中原子的偶极压缩和相干俘获  

Atomic Dipole Squeezing and Coherent Population Trapping in the Nonlinear Jaynes-Cummings Model

作　　者：田永红[1] 彭金生[2] 韩立波[1] 

机构地区：[1]荆州师范学院物理系,荆州434100 [2]华中师范大学物理系,武汉430079

出　　处：《量子电子学报》2001年第2期145-152,共8页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金;湖北省教委科学研究项目计划资助的课题

摘　　要：本文运用全量子理论研究了与单模光场双光子作用的非线性Ｊａｙｎｅｓ－Ｃｕｍｍｉｎｇｓ模型系统中原子的量子行为，论证了原子发生相干俘获的条件，分别讨论了初场处于真空态（ｎ＝０）和热混态（ｎ≠０）时非线性修正项和双光子失谐量对原子布居反转的演化特性和偶极压缩效应的影响．The atomic quantum behavior in the interaction system of a single-mode light field with the nonlinear Jaynes-Cummings model via two-photon processes are studied by means of quantum theory. The condition for taking place of the phenomenon of coherent trapping is given. The influences of the nonlinear correction term and the two-photon frequency detuning on the time evolution of atomic particle number population inversion and the atomic dipole squeezing are discussed, respectively, when the initial field is on the vacuum state (n=0) and on the thermal chaotic state (n/0).

关 键 词：双光子J-C模型 偶极压缩 相干俘获 热躁声 原子 量子光学 

分 类 号：O431.2[机械工程—光学工程]