| Tavis-Cummings模型中两纠缠原子纠缠的演化特性 |
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| 引用本文： | 单传家,夏云杰.Tavis-Cummings模型中两纠缠原子纠缠的演化特性[J].物理学报,2006,55(4):1585-1590. |
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| 作者姓名： | 单传家 夏云杰 |
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| 作者单位： | 曲阜师范大学物理工程学院，曲阜 273165 |
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| 摘 要： | 研究了两个纠缠的两能级原子与单模粒子数场进行相互作用系统中两原子的纠缠演化.结果表明：两个原子之间的纠缠呈现出周期性的演化特性，初始两原子的状态、原子之间的偶极相互作用和粒子数场对腔中两个原子的纠缠有着显著的影响.发现适当选择原子的初态，两原子会永远处于最大纠缠态.
关键词：
量子纠缠
偶极-偶极相互作用
部分转置矩阵负本征值
纠缠原子
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| 关 键 词： | 量子纠缠 偶极-偶极相互作用 部分转置矩阵负本征值 纠缠原子 |
| 收稿时间： | 08 22 2005 12:00AM |
| 修稿时间： | 2005-08-222005-11-07 |
The entanglement character of two entangled atoms in Tavis-Cummings model |
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| Shan Chuan-Jia,Xia Yun-Jie.The entanglement character of two entangled atoms in Tavis-Cummings model[J].Acta Physica Sinica,2006,55(4):1585-1590. |
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| Authors: | Shan Chuan-Jia Xia Yun-Jie |
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| Institution: | College of Physics and Engineering, Quilt Normal University, Qufu 273165, China |
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| Abstract: | We investigate the entanglement time evolution of two entangled two-level atoms that interact resonantly with a single-mode field in the Fock state. The results show that the two-atom entanglement state appears with periodicity. The influence of the two-atom initial state, the dipole-dipole coupling intensity between two atoms, and the field in the Fock state on the entanglement degree of two atoms are revealed. Meanwhile the two-atom quantum state will forever stay in the maximum entangled state when the initial state is proper. |
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| Keywords: | quantum entanglement dipole-dipole coupling intensity negative eigenvalues of the partial transposition entangled atoms |
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