激光与光电子学进展, 2016, 53 (9): 092701, 网络出版: 2016-09-14
原子与库场相互作用系统中密度矩阵主方程的解 
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Solution of Master Equation of Density Matrix in Interaction System of Atom with Thermal Reservoir
量子光学 二能级原子 库场 主方程解 偶极压缩效应 quantum optics two-level atom thermal reservoir solution of master equation dipole squeezing
摘要
利用Ket-Bra纠缠态方法求解了原子与库场相互作用系统中的密度矩阵主方程，给出了解的解析表达式。研究了系统中原子的偶极压缩效应，讨论了库场平均光子数和原子自发辐射率对原子偶极压缩效应的影响。研究结果表明，随着自发辐射率和平均光子数的增大，原子偶极压缩效应减弱。
Abstract
The master equation of density matrix in the interaction system of atom with thermal reservoir can be solved by virtue of the Ket-Bra entangled state method and the analytical solution expression is shown. Atomic dipole squeezing effect in this system is numerically studied and the effects of the mean number of photons in the thermal reservoir and the atomic spontaneous emission rate on the atomic dipole squeezing effect are discussed. The results show that the atomic dipole squeezing effect is weakened with the increase of the mean number of photons and the atomic spontaneous emission rate.
卢道明. 原子与库场相互作用系统中密度矩阵主方程的解[J]. 激光与光电子学进展, 2016, 53(9): 092701. Lu Daoming. Solution of Master Equation of Density Matrix in Interaction System of Atom with Thermal Reservoir[J]. Laser & Optoelectronics Progress, 2016, 53(9): 092701.
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