量子电子学报, 2013, 30 (6): 716, 网络出版: 2013-12-04
经典驱动J-C模型中的纠缠演化和转移特性研究
Entanglement evolution and transfer in classical driven Jaynes-Cummings model
量子光学 量子纠缠 部分转置矩阵负本征值 经典场驱动 quantum optics quantum entanglement negative eigenvalues of the partial transposed mat classical field driven
摘要
研究了受经典场驱动的两个二能级原子分别与两个单模腔场相互作用模型 中两原子的纠缠动力学行为。该工作主要是对经典场驱动存在的J-C模型进行研究,采用数值计算的方法,详细分析了纠缠初始状态以及 经典场的驱动强度对原子纠缠和转移特性的影响。结果表明,适当调节经典场驱动强度,可以使原子的纠缠 突然死亡现象得到抑制,同时实现原子与腔场间的最大转移。
Abstract
The entanglement dynamical behaviors of two two-level atoms, which respectively interacted with two single-mode cavity field were investigated. The Jaynes-Cummings model in which the classical driven strength exists was studied. By means of numerical calculation, effect of the initial entanglement and classical field driven strength on the entanglement evolution and transfer of two atoms was analyzed. The result shows that when the appropriate condition is chosen, the phenomenon of entanglement sudden death can be inhibited, and the biggest entanglement transfer between the atoms and cavity fields can be realized.
封玲娟, 张英杰, 夏云杰. 经典驱动J-C模型中的纠缠演化和转移特性研究[J]. 量子电子学报, 2013, 30(6): 716. FENG Ling-juan, ZHANG Ying-jie, XIA Yun-jie. Entanglement evolution and transfer in classical driven Jaynes-Cummings model[J]. Chinese Journal of Quantum Electronics, 2013, 30(6): 716.