双Jaynes-Cummings耦合模型几何量子失协研究  

Geometric quantum discord in double Jaynes-Cummings model

作　　者：帕提古丽.马木提 艾合买提.阿不力孜[1] 麦麦提依明.吐孙[1] 帕肉克.帕尔哈提 买买提.阿不力孜 

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6期737-742,共6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：基于Dakic提出的几何量子失协度量方法,研究了双Jaynes-Cummings(J-C)模型的几何量子失协。分析了初始态纯度、纠缠度、腔与原子间的耦合常数及腔内光子数等对几何量子失协随时间演化特性的影响。结果表明:通过提高纯度、初始纠缠度的值可以增大几何量子失协;非零光子数导致几何量子失协振荡衰减;通过调整腔与原子间的耦合常数可以改变振荡频率。Based on the geometric quantum discord measurement method proposed by Dakic, the geometric quantum discord of double Jaynes-Cummings （J-C） model is investigated. Influences of the initial state purity, entanglement degree, coupling constant between atom and cavity, intracavity photon number on the evolution characteristics of geometric quantum discord with time are analyzed. Results show that geometric quantum discord can be increased by increasing the purity and initial entanglement value. The non-zero photon number leads to the decay of geometric quantum oscillate oscillate. The oscillation frequency can be changed by adjusting the coupling constant between the atom and cavity.

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

分 类 号：O431.2[机械工程—光学工程]