双势阱中原子质心运动对自发辐射的抑制  

Suppression of spontaneous emission induced by atomic mass centre moving in double-well potential

作　　者：丁明嵩 吕桓林[1] 刘玉洁[1] 郑丽[1] DINC Mingsong LV Huanlin LIU Yujie ZHENC Li(School of Information Science and Engineering, Dalian Polytechnic University, Dalian 116034, China)

机构地区：[1]大连工业大学信息科学与工程学院,辽宁大连116034

出　　处：《量子电子学报》2017年第4期473-480,共8页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金;11105021;11175044;吉林省自然科学基金;201115007~~

摘　　要：研究了一个囚禁于对称双势阱中的二能级原子与单模腔场的相互作用。通过求解薛定谔方程,给出了整个系统波函数解析解和原子能级粒子数反转的解析表达式.分析了当腔场初始态分别为粒子数态、相干态以及热态时原子粒子数反转随时间的演化情况,并考虑了原子质心运动对粒子数反转的影响。结果表明通过选择合适的腔场初始态、势阱位置及相关因素,可以有效地控制原子的自发辐射率.The interaction between a two-level mode cavity field is investigated. By solving atom trapped in symmetric double-well potential and a single SchrSdinger equation, the analytical expressions of the total wave function and inversion of the atomic energy level for the whole system are given. Time evolution of the atomic population inversion is analyzed for different initial states of the cavity field, such as particle number, coherent and thermal states. Influence of atomic mass centre motion on population inversion is considered. Results show that by choosing appropriate cavity field initial state, potential well location and related factors, the spontaneous emission rate of an atom can be effectively controlled.

关 键 词：量子光学 粒子数反转 自发辐射率 双势阱 量子隧穿 

分 类 号：O431[机械工程—光学工程]