级联三能级原子与光场相互作用模型中的保真度  

Fidelity of quantum states in three-level atom and field model

作　　者：王冬艳[1,2] 

机构地区：[1]河北华烨冀科信息技术有限责任公司,河北石家庄050081 [2]河北省信息安全认证工程技术研究中心,河北石家庄050081

出　　处：《河北省科学院学报》2012年第3期28-31,共4页Journal of The Hebei Academy of Sciences

摘　　要：运用了全量子理论,对级联三能级原子和单模光场作用模型中的保真度演化特性进行了研究,讨论了影响保真度的因素。结果显示,系统的保真度主要取决于原子和光场之间的关联程度,当原子处于高能态时,原子和光场关联增强,光场和原子的保真度降低;原子处在低能态时,光场和原子的关联性减弱,光场和原子的保真度增加。Fidelity of quantum states in three-level atom and single-mode field is studied by means of quan- tum theory. It discusses the strongly coupled atom-field system as a quantumclassical hybrid with dynami- cally coupled quantum and classical degrees of freedom. The result shows that the fidelities become higher with the increasing probability of the atom initially situated in the ground state, while the fidelities become smaller with the decreasing probability of the atom initially situated in the ground state.

关 键 词：保真度 级联三能级 量子态 

分 类 号：O431[机械工程—光学工程]