类Kerr介质中双模SU(1,1)相干态场与Λ型三能级原子相互作用的量子统计性质  

THE QUANTUM STATISTICAL PROPERTIES IN THE SYSTEM OF TWO-MODE SU(1,1) COHERENT STATES INTERACTING WITH THE Λ-TYPE THERR-LEVEL ATOM ADDED KERR-LIKE-MEDIUM

作　　者：刘小青[1] 谢芳森[1] 

机构地区：[1]江西师范大学物理与通信电子学院,南昌330027

出　　处：《光子学报》2002年第10期1178-1183,共6页Acta Photonica Sinica

摘　　要：导出了类Kerr介质中双模SU( 1 ,1 )相干态场与Λ型三能级原子相互作用系统的态函数 ,研究了Kerr效应对Λ型三能级原子布居概率、双模SU( 1 ,1 )相干态场的互关联函数、Cauchy Schwartz不等式及二阶相干度的影响 结果表明 :Kerr效应使原子与光场的耦合减弱 ,原子布居的崩塌与复苏的周期缩短 ;在初始光场较弱和较强两种情况下 ,类Kerr介质对双模SU( 1 ,1 )相干态场两模间的相关性。The state function for the interaction of a Λ type three level atom with two mode SU(1,1) coherent states in a Kerr like medium is derived.By using the state function it is studied that the influence of the Kerr effect on the Λ type three level atomic occupation probabilities,the two mode intensity correlation function,the Cauchy Schwartz inequality,and the second order correlation function for each mode.The results indicate that the Kerr effect weakens the coupling of the field atom and shortens the period of quantum collapses and revivals of the atomic level occupation.Kerr effects on the properties of the correlation,on the correlation intensity bewteen the two mode,on the photon number distribution and on the bunching or antibunching effect of the two mode SU(1,1) coherent states produce obviously different characters when the initial intensity of the light field is changed.

关 键 词：相互作用 量子统计性质 Λ型三能级原子 类KERR介质 CAUCHY-SCHWARTZ不等式 双模互关联函数 双模相干态场 量子光学 

分 类 号：O431.2[机械工程—光学工程]