| 相位损耗腔中TaVis-Cummings模型的熵特性 |
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| 引用本文： | 张立辉,甘仲惟,李高翔.相位损耗腔中TaVis-Cummings模型的熵特性[J].光学学报,2004,24(7):93-999. |
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| 作者姓名： | 张立辉 甘仲惟 李高翔 |
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| 作者单位： | 江汉大学物理与信息工程学院,武汉,430056;华中师范大学物理系,武汉,430079 |
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| 基金项目： | 国家自然科学基金 ( 10 2 0 4 0 0 9)，武汉市科技晨光计划资助课题 |
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| 摘 要： | 研究了Tavis—Cummings模型中光场存在相位损耗时，原子-光场系统线性熵、原子线性熵和光场线性熵的时间演化特性，讨论了光场的不同量子统计性质、不同的衰变常数和两原子的初始状态对各线性熵的影响。结果表明：光场的不同量子统计性质使得系统线性熵、原子线性熵和光场线性熵均发生明显改变。系统线性熵的演化与原子的初始状态无关，而原子线性熵的演化较强地依赖于原子的初始状态，但与腔场的相位损耗无关。
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| 关 键 词： | 量子光学 Tavis-Cummings模型 相位损耗 线性熵 压缩真空场 |
| 收稿时间： | 2003/3/7 |
The Tavis-Cummings Model Entropy Property in a Phase Damping Cavity |
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| Zhang Lihui Gan Zhongwei Li Gaoxiang College of Physics and Information Engineering Jianghan University,Wuhan.The Tavis-Cummings Model Entropy Property in a Phase Damping Cavity[J].Acta Optica Sinica,2004,24(7):93-999. |
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| Authors: | Zhang Lihui Gan Zhongwei Li Gaoxiang College of Physics and Information Engineering Jianghan University Wuhan |
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| Institution: | Zhang Lihui 1 Gan Zhongwei 2 Li Gaoxiang 2 1 College of Physics and Information Engineering Jianghan University,Wuhan 430056 2 Department of Physics,Huazhong Normal University,Wuhan 430079 |
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| Abstract: | The time evolution of the linear entropies for the atom field coupling system, the atom and the field in Tavis Cummings model in the presence of phase damping of field is investigated. The effects of the initial field states, different value of decay constant and the initial atomic states on all the entropies are discussed.The results show that the different properties of the initial field prepared in the cavity can change the characters of all the linear entropies significatly.The evolution of the linear entropy of the system is independent of initial atomic preparation,but the linear entropy of the atom depends on the initial atomic state and independent of the cavity phase damping. |
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| Keywords: | quantum optics Tavis-Cummings model phase damping linear entropy squeezed vacuum field |
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