单Jaynes-Cummings原子与孤立原子系统中的各种量子关联  

Quantum correlations in system of single Jaynes-Cummings atom and an isolated atom

作　　者：帕肉克.帕尔哈提 艾合买提.阿不力孜[1] 麦麦提依明.吐孙[1] 王飞[1] 

机构地区：[1]新疆师范大学物理与电子工程学院,新疆乌鲁木齐830054

出　　处：《量子电子学报》2016年第2期200-207,共8页Chinese Journal of Quantum Electronics

基　　金：国家高层次人才特殊支持计划后备人选之科技创新领军人才项目;自治区天山英才工程第二层次培养人选项目~~

摘　　要：利用单Jaynes-Cummings(J-C)二能级原子和孤立原子构成的模型,研究了该模型中的各种量子关联。基于Dakic等提出的几何量子失协的度量方法,采用数值计算方法分析了系统中两原子间几何量子失协的演化,同时给出了量子纠缠和量子失协的演化。研究结果表明:通过提高两原子间初始纠缠度及处于W态时的纯度可以提高系统的量子关联。耦合常数和光子数在量子关联演化过程中扮演了重要角色。Various correlations in system of single Jaynes-Cummings(J-C) atom and an isolated atom were investigated via the measurement of geometric quantum discord proposed by Dakic et al.The dynamical evolutions of geometric quantum discord between two atoms were numerically analyzed as well as those of the quantum entanglement and quantum discord.Results show that quantum correlations can be increased by increasing initial entanglement and purity of the prepared W-state of the two atoms.The coupling constant and photon number play significant roles in the quantum correlation dynamics.

关 键 词：量子光学 JAYNES-CUMMINGS模型 量子纠缠 量子失协 几何量子失协 

分 类 号：O413.1[理学—理论物理]