| 腔耦合双J-C模型中原子纠缠的猝灭和猝生 |
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| 引用本文： | 王忠纯,沈法华,刘成林.腔耦合双J-C模型中原子纠缠的猝灭和猝生[J].量子电子学报,2011,28(1):65-72. |
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| 作者姓名： | 王忠纯 沈法华 刘成林 |
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| 作者单位： | 盐城师范学院物理科学与电子技术学院, 江苏 盐城 224002 |
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| 摘 要： | 研究了腔间有耦合的双J-C模型中原子纠缠的动力学, 分析了腔间耦合系数A和原子的初态对原子纠缠的猝灭(ESD)和猝生(ESB)的影响. 通过对原子间共生纠缠度的数值分析发现, 当原子初态为第一类类Bell态时, 不会出现ESD和ESB, 腔间的耦合可使原子的纠缠加大, 并能使初态为分离态的原子产生纠缠. 当原子初态为第二类类Bell态时, A的大小可改变出现ESD与ESB的时间间隔, 或决定是否出现ESD, 但腔间的耦合不能使初态不纠缠的原子产生纠缠.
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| 关 键 词： | 量子光学 耦合谐振腔 双J-C模型 共生纠缠度 纠缠的猝灭 纠缠的猝生 |
| 收稿时间： | 2010-04-20 |
| 修稿时间： | 2010-05-18 |
Sudden death and sudden birth of atomic entanglement in double Jaynes-Cummings model composed of two coupled cavities |
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| WANG Zhong-chun,SHEN Fa-hua,LIU Cheng-lin.Sudden death and sudden birth of atomic entanglement in double Jaynes-Cummings model composed of two coupled cavities[J].Chinese Journal of Quantum Electronics,2011,28(1):65-72. |
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| Authors: | WANG Zhong-chun SHEN Fa-hua LIU Cheng-lin |
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| Institution: | School of Physics and Electronics, Yancheng Teachers University, Yancheng 224002, China |
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| Abstract: | The atomic entanglement dynamics is studied in the double Jaynes-Cummings model composed of two coupled cavities.Effect of the cavity-cavity coupling constant A and the atomic initial states on entanglement sudden death(ESD) and entanglement sudden birth(ESB) is analysed.By studying the atomic concurrence,it was shown that when the atomic initial states are the first kind Bell-like states,ESD and ESB doesn't appear,coupling of the cavities can increase the atomic entanglement and entanglement occurs even th... |
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| Keywords: | quantum optics coupled cavities double Jaynes-Cummings model concurrence entanglement sudden death entanglement sudden birth |
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