| 热库对原子-场耦合系统中量子非局域性的影响 |
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| 引用本文： | 蔡欣,杨菁,黄光明.热库对原子-场耦合系统中量子非局域性的影响[J].华中师范大学学报(自然科学版),2004,38(3):293-296. |
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| 作者姓名： | 蔡欣 杨菁 黄光明 |
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| 作者单位： | 1. 华中师范大学,物理科学与技术学院,武汉,430079
2. 湖北交通职业技术学院,理化系,武汉,430079 |
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| 基金项目： | 国家自然科学基金资助项目(10204009). |
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| 摘 要： | 讨论了光场初态和热库性质对原子场耦合系统中量子非局域性的作用．结果显示，如果腔损耗很弱，热库的平均光子数很小．系统会周期性地展现出量子非局域性．非局域性的消失速度依赖于初始压缩真空态的振幅、热库的平均光子数和腔的衰退系数．场越强、平均光子数和衰退系数越大，非局域性减小得越快。
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| 关 键 词： | 量子非局域性 热库 腔 压缩真空态 |
| 文章编号： | 1000-1190(2004)03-0293-04 |
The effects of thermal environment on quantum nonlocality in atom-field coupling system |
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| CAI Xin,YANG Jing,HUANG Guang-ming.The effects of thermal environment on quantum nonlocality in atom-field coupling system[J].Journal of Central China Normal University(Natural Sciences),2004,38(3):293-296. |
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| Authors: | CAI Xin YANG Jing HUANG Guang-ming |
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| Institution: | CAI Xin~1,YANG Jing~2,HUANG Guang-ming~1 |
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| Abstract: | The effects of the initial field state and thermal environment on quantum nonlocality in atom-field coupling system are investigated. It is found that if the cavity dissipation is very weak and the average photon number of thermal environment is very small, the atom-field state can exhibit quantum nonlocality periodically. The rapidity of the loss of the quantum nonlocality depends on the amplitude of the initial squeezed vacuum state and the cavity damping constant and the average photon number of thermal environment. The stronger the field is and the larger the damping constant and the average photon number could be, the more rapidly the nonlocality decreases. |
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| Keywords: | quantum nonlocality thermal environment cavity squeezed vacuum state |
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