非简并双光子Tavis-Cummings模型中量子态保真度及原子间关联  

Fidelity of Quantum States and the Cross-correlation Function between Atoms in the Non-degenerate Two Photons Tavis-Cummings Model

作　　者：刘堂昆[1,2,3] 王继锁[1,2] 詹明生 

机构地区：[1]中国科学院武汉物理与数学研究所波谱与原子分于物理国家重点实验室 [2]中国科学院安徽光学精密机械研究所激光光谱学开放实验室,合肥230031 [3]湖北师范学院物理系,黄石435002

出　　处：《量子电子学报》2001年第5期438-444,共7页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(批准号:19774069);湖北省高等学校科研基金资助项目(批准号:99A048).

摘　　要：运用全量子理论研究了双模真空光场作用下的非简并双光子Ｔ－Ｃ模型体系中量子态保真度和原子间关联特性，讨论了不同的原子初态条件下，原子间偶极相互作用对体系中的量子态保真度和原子间关联的影响．结果表明：初始各自处在激发态的无关联的两原子在双模真空光场和原子间的偶极相互作用下呈现关联特性；初始各自处在基态的无关联的两原子在相互作用下无关联，并且系统、光场和原子三者的量子态在演化过程中不失真．The fidelities of quantum states and the cross-correlation function between atoms in the non-degenerate two photons Tavis-Cummings model in two-mode vacuum field are studied b means of quantum theory. The influence of dipole-dipole interaction between atoms and different atomic initial states on the fidelities of quantum states and the cross-correlation function between atoms are discussed. The result shows that the two no-correlation atoms initially situated in excited state behave correlated character in the condition of interaction with two-mode vacuum optical field and dipole-dipole interaction between atoms. While the two atoms initially situated in ground state behave no-correlation, and the quantum state of all system, optical field and atoms do not lose fidelities during evolution.

关 键 词：非简并双光子T-C模型 量子态保真度 原子间关联 量子光学 

分 类 号：O431.2[机械工程—光学工程]