光子学报, 2016, 45 (9): 0927003, 网络出版: 2016-10-19
强度关联耦合下两个二能级原子与Pólya态光场相互作用系统的量子特性
Quantum Properties of Double Two-level Atoms Interacting with Pólya State Light under Intensity Dependent Coupling Condition
量子光学 pólya态光场 线性熵 粒子布局数反转 信息熵压缩 Quantum optics Pólya field Linear entropy Atomic inversion Entropy squeezing
摘要
利用全量子理论计算方法, 探究了在强度关联耦合下两个二能级原子与单模Pólya态光场相互作用系统中原子线性熵粒子布局数反转以及信息熵压缩随时间的演化规律.分析了原子初态、光场参量p和r以及Lamb-Dicke参量η对原子线性熵、粒子布局数反转以及信息熵压缩的影响.结果表明:当原子处于不同的初态时, 相互作用系统表现出完全不同的量子特性; 光场参量p增大使得各个物理量振荡周期增大; 光场参量r增大, 使振幅发生变化, 破坏粒子布局数反转崩塌-复原现象以及信息熵压缩效应.
Abstract
The linear entropy and atomic inversion and entropy squeezing in a system of double two-level atoms interacting with a single mode light field at Pólya state under intensity dependent coupling condition were studied by means of full quantum theory. The influences of the initial state of atoms and different parameters of the light field and parameters of Lamb-Dicke on the linear entropy, atomic inversion and entropy squeezing were discussed. The results show that, when the atom in different initial states, the quantum properties of the system are completely different. The period of oscillation increases with the light field parameter of p. Increasing the value of the light field parameter r, which causes the amplitude change and the collapse-recovery phenomenon and the entropy squeezing are destroyed.
李斌, 萨楚尔夫, 郭彩丽. 强度关联耦合下两个二能级原子与Pólya态光场相互作用系统的量子特性[J]. 光子学报, 2016, 45(9): 0927003. LI Bin, Sachuerfu, GUO Cai-li. Quantum Properties of Double Two-level Atoms Interacting with Pólya State Light under Intensity Dependent Coupling Condition[J]. ACTA PHOTONICA SINICA, 2016, 45(9): 0927003.