双光子Jaynes-Cummings模型中场熵的演化特性  

Properties of the field entropy evolution in two-photon Jaynes-Cummings model

作　　者：马志民[1] 李平[1] 尹海涛[1] 马爱群[2] 刘树田[2] 

机构地区：[1]哈尔滨师范大学呼兰学院 [2]哈尔滨工业大学应用物理系

出　　处：《哈尔滨工业大学学报》2005年第6期810-812,共3页Journal of Harbin Institute of Technology

基　　金：黑龙江省教育厅科研基金资助项目.

摘　　要：研究了双光子Jaynes-Cummings模型中,在原子处于相干迭加态、场处于相干态时场熵的演化规律,进而给出了JCM模型中光场与原子耦合时,在共振条件下系统任意时刻的态势情况下场墒的演化特性.通过解析式和图表分析了初始光场平均光子数n和耦合常数g对场熵演化的影响,给出了教为确切的结论.The properties of the field entropy evolution in the two-photon Jaynes-Cummings model (JCM) with the atoms being at coherent superposition states and the field being at coherent state are studied. When atoms are always at coherent superposition states and atomic initial states are excited or at ground state, at the same time the field is at coherent state, the properties of the field entropy evolve with respect to time. Furthermore, the optical field couples with atoms in the JCM, the properties of the field entropy evolve when ω0 is equal to 2ω and state vector is any time. The influences of the average photon numbers of the initial optical field n¯ and coupling constant g on the evolution of the field entropy are also discussed through expressions and figures.

关 键 词：相干迭加态 相干态 JCM 熵 

分 类 号：O431.2[机械工程—光学工程]