【作者】 蔡欣； 黄光明； 李高翔；

【Author】 CAI Xin HUANG Guangming LI Gaoxiang Department of Physics, Huazhong Normal University, Wuhan 430079

【机构】 华中师范大学物理科学与技术学院；

【摘要】 本文讨论了光场初态和热库性质对原子-场耦合系统量子非局域性的作用。我们发现如果腔损耗很弱,热库的平均光子数很小,系统会周期性的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,非局域性减小的越快。更多还原

【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.更多还原