玻色-爱因斯坦凝聚原子与Schr(o|¨)dinger猫态相互作用系统中的保真度  

Fidelity of quantum state for interacting system of S-cat state light field and atomic Bose-Einstein condensate

作　　者：格日乐[1] 萨楚尔夫[1,2] 张彩花[1] 

机构地区：[1]内蒙古师范大学物理与电子信息学院,呼和浩特市010022 [2]内蒙古师范大学图书馆,呼和浩特市010022

出　　处：《原子与分子物理学报》2009年第3期557-564,共8页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金资助项目(60467002);内蒙古自然科学基金资助项目(200408020107);内蒙古高等学校科研基金资助项目(NJ03038)

摘　　要：利用全量子理论及量子信息保真度理论,研究了薛定谔猫态光场与玻色爱因斯坦凝聚原子相互作用系统中,量子态保真度随时间的演化特性.讨论了光场强度和玻色爱因斯坦凝聚原子间的耦合强度对量子态保真度的影响.结果表明:光场强度可调制量子态的保真效果,而原子间的耦合常数主要影响量子态保真度的振荡频率.The evolution characteristics of quantum state fidelity in an interacting system of S-cat state optical field and Bose-Einstein condensate have been studied by means of quantum fidelity and the influence of the light field intensity and interaction among atoms of Bose-Einstein condensate on the quantum state fidelity have been discussed. The results indicate that the optical field can modulate the fidelities of quantum states in the system of interaction, whereas the interaction constants Ω among atoms influence mainly the oscillation frequency of the fidelity of quantum state of system.

关 键 词：量子光学 保真度 玻色-爱因斯坦凝聚 S-cat态 S-cat态光场 

分 类 号：O431.2[机械工程—光学工程]