V型三能级原子双模光场系统中光场压缩性质  

Squeezing properties of two-mode squeezed field interacting with V-type three-level atoms

作　　者：李明[1] 唐涛[1] 陈鼎汉[1] 

机构地区：[1]桂林理工大学理学院

出　　处：《物理学报》2011年第7期240-243,共4页Acta Physica Sinica

基　　金：教育部科学技术研究重点项目基金(批准号:209094);广西自然科学基金(批准号:2010GXNSFB013050)资助的课题~~

摘　　要：本文利用格子液体方法对文献中给出的V型三能级原子玻色-爱因斯坦凝聚体与双模压缩相干态光场相互作用系统的哈密顿量进行分析,发现文献中对原子间相互作用部分的处理有不合理之处,从而对该哈密顿量作出了改进并研究了V型三能级原子双模光场系统中光场压缩性质.结果表明:光场两正交分量交替呈现周期性压缩现象,其压缩深度与光场初始压缩因子密切相关,而压缩时间与双模光场的频率有关.The Hamiltonian operator of a system of V-type three-level atomic Bose-Einstein condensate interacting with two-mode squeezed coherent light field is analyzed in terms of the lattice-liquid model. It is indicated that the contribution of the interaction between atoms to the Hamiltonian in the literature is unreasonable, so the Hamiltonian operator is improved and the squeezing properties of two-mode squeezed field interacting with V-type three-level atoms are studied. The results show that two quadrature comonents of light can be squeezed periodically and that maximum depth of squeezing is closely related to the initial squeezing parameter of light and that the duration is determined by the frequency of two-mode field.

关 键 词：玻色.爱因斯坦凝聚 V型三能级原子 压缩相干态 双模压缩态光场 

分 类 号：O431.2[机械工程—光学工程]