量子电子学报, 2016, 33 (2): 200, 网络出版: 2016-03-29
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
量子光学 Jaynes-Cummings模型 量子纠缠 量子失协 几何量子失协 quantum optics Jaynes-Cummings model quantum entanglement quantum discord geometrical quantum discord
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。
Abstract
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.
帕肉克·帕尔哈提, 艾合买提·阿不力孜, 麦麦提依明·吐孙, 王飞. 单Jaynes-Cummings原子与孤立原子系统中的各种量子关联[J]. 量子电子学报, 2016, 33(2): 200. Parouke Paerhati, Ahmad Abliz, Maimaitiyiming Tusun, Wang Fei. Quantum correlations in system of single Jaynes-Cummings atom and an isolated atom[J]. Chinese Journal of Quantum Electronics, 2016, 33(2): 200.