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物理学报. 2006, 55(4): 1585-1590.
doi: 10.7498/aps.55.1585.
Tavis-Cummings模型中两纠缠原子纠缠的演化特性
- 收稿日期: 2005-08-22
- 修回日期: 2005-11-07
- 刊出日期: 2006-02-05
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.
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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
English Abstract
The entanglement character of two entangled atoms in Tavis-Cummings model
- Received Date:
22 August 2005
- Accepted Date:
07 November 2005
- Published Online:
05 February 2006
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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