| Linear entropy dynamics of the field in the Jaynes－Cummings model with an intensity-dependent coupling in the dispersive approximation |
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| 引用本文： | 李春先,方卯发.Linear entropy dynamics of the field in the Jaynes－Cummings model with an intensity-dependent coupling in the dispersive approximation[J].中国物理 B,2003,12(8):866-871. |
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| 作者姓名： | 李春先 方卯发 |
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| 作者单位： | Department of Physics, Hunan Normal University, Changsha 410081, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 19874020), by the Natural Science Foundation of Hunan Province, China (Grant No 01JJY3030) and by the Ministry of Education, China. |
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| 摘 要： | We present the linear entropy dynamics of the field state in the dispersive cavity in the Jaynes－Cummings model with an intensity-dependent coupling in the dispersive approximation, and investigate the influence of dissipation on entanglement between the field and the atoms. We show that the coherence properties of the field are also affected by the cavity when the nonlinear process of the field interacting with the atoms with an intensity-dependent coupling is involved, and find that the dissipation constant, the intensity of the field and the atomic distribution angle have different influence on the coherence properties of the field.
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| 关 键 词： | 线性熵 Jaynes-Cummings模型 相干损失 强度依赖耦合 原子纠缠 量子力学 扩散近似 |
| 收稿时间： | 2003-02-10 |
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