双模纠缠相干光场与Λ型原子耦合系统中光场的压缩效应  

Squeezing of the field in the system of two-mode entangled coherent states interacting with a Λ-type three-level atom

作　　者：卢道明[1] 

机构地区：[1]武夷学院电子工程系,福建武夷山354300

出　　处：《福州大学学报（自然科学版）》2009年第4期498-502,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省自然科学基金资助项目(2008J0217)

摘　　要：利用数值计算方法研究双模纠缠相干光场与Λ型三能级原子相互作用系统中光场的压缩效应,讨论了双模纠缠相干光场纠缠程度和两场模的初始平均光子数对光场压缩效应的影响.数值计算结果表明:随双模纠缠相干光场纠缠程度的增大,压缩效应增强,光场处于最大纠缠态时,光场压缩效应最强;另一方面,随双模纠缠相干光场初始平均光子数的增大,光场的压缩效应减弱,当双模光场初始平均光子数大于一定值后,压缩效应消失.By means of numerical calculations, squeezing effect of the field in the system of two - mode entangled coherent states interacting with a A - type three - level atom is investigated. The influences of the degree of entanglement of two - mode entangled coherent state optics field and mean photon numbers of two - mode optics field on squeezing effect are discussed. The results show that squeezing effect strengthens with increasing of the the degree of entanglement of two - mode entangled coherent state optics field and weakens with increasing of mean photon numbers of two - mode entangled coherent state optics field.

关 键 词：双模纠缠相干场 ∧型原子 压缩效应 

分 类 号：O431.2[机械工程—光学工程]