右逆相干态与单原子作用的量子态保真度  

Fidelity of quantum state in system of right inverse coherent state interacting with single atom

作　　者：张康隆 陶宇 刘堂昆 

机构地区：[1]湖北工程职业学院,湖北黄石435004 [2]湖北师范大学物理与电子科学学院,湖北黄石435002

出　　处：《湖北师范学院学报（自然科学版）》2016年第4期44-50,共7页Journal of Hubei Normal University(Natural Science)

基　　金：国家重点基础研究发展计划项目(2012CB922103);国家自然科学基金(11274104);湖北省自然科学基金(2011CDA021)

摘　　要：运用全量子化理论和数值处理方法,研究了右逆相干态与单原子相互作用的量子态保真度的时间演化特性,讨论了不同的参量对体系的量子态保真度的影响。结果表明:系统、光场和原子三者的保真度始终处在失真状态,而且演化过程无规则。In this paper, the time evolution properties of the fidelity of quantum state in the system of right inverse co- herent light field interacting with single atom are studied by means of full quantum theory. The influences of the optical field strength, the probability amplitude angle of the atom and the number of the right inverse operator acting on the co- herent states on the fidelity of quantum state are discussed by numerical calculations. The results show that the fideli- ties of system, optical field and atom are always in a state of distortion, and the evolution has no rule.

关 键 词：右逆相干态 单原子 量子态 保真度 

分 类 号：O431[机械工程—光学工程]