压缩真空场与运动二能级原子相互作用系统的光场压缩效应  

Radiation squeezing effect in the system of the squeezed vacuum field interacting with a moving two-level atom

作　　者：臧学平[1] 胡继刚[2] 汪贤才[1] 

机构地区：[1]池州学院物理系,安徽池州247000 [2]合肥工业大学理学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2007年第6期787-790,793,共5页Journal of Hefei University of Technology：Natural Science

摘　　要：文章采用求解Schrdinger方程和数值计算方法,研究了单模压缩真空场与运动二能级原子相互作用过程中的光场压缩效应。数值计算结果表明:原子运动速度以及场模结构参数增大,引起时间演化曲线显著上移;原子基态几率幅越大,光场压缩越深,反之,则压缩越浅,甚至不能实现压缩;相位角对时间演化曲线的影响规律与原子基态几率幅影响规律基本一致;压缩因子由小变大过程中,光场随之表现为不能压缩,实现部分压缩,然后压缩逐渐消失的过程。The radiation squeezing effect in the interaction process between the single mode squeezed vacuum field and a moving two-level atom is studied by means of solving the Schr odinger equation and numerical calculations. The results are as follows, with the increasing of the atom＇s speed and the parameter of field model structure, the time evolution curve rises noticeably; with the rising of the probability breadth of the atom ground state, the squeezing depth of the radiation field increases, otherwise it decreases, even there is no squeeze; the phase angle effects the time evolution curvets change like the probability breadth of the atom ground state; during the process that the compression factor becomes larger, the radiation field can not squeeze firstly, then it squeezes partially, finally the squeeze gradually disappears.

关 键 词：量子光学 压缩真空场 运动二能级原子 光场压缩 

分 类 号：O431.2[机械工程—光学工程]