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Kerr介质中耦合双原子与双模压缩真空场相互作用系统的光子统计性质
引用本文:方家元,黄春佳,黄祖洪,周明.Kerr介质中耦合双原子与双模压缩真空场相互作用系统的光子统计性质[J].物理学报,2004,53(4):1081-1087.
作者姓名:方家元  黄春佳  黄祖洪  周明
作者单位:长沙理工大学物理与电子科学系,长沙 410077
基金项目:湖南省教育厅科研计划项目(批准号:011040010128)资助的课题.
摘    要:研究了存在Kerr介质时,双模压缩真空场与耦合二能级原子相互作用系统中光子的统计性质,讨论了Kerr介质与光场的耦合强度、光场的初始压缩因子和原子的初态对光子统计性质的影响.数值计算结果表明,光子周期性地交替呈现聚束和反聚束效应,光场两模之间总是呈现正相关,并且这种相关为非经典相关;Kerr介质的影响使光场的二阶相干度演化曲线呈现周期性的崩塌-回复现象,随着Kerr效应的加强,崩塌-回复周期变短,以至消失. 关键词: Kerr介质 耦合双原子 双模压缩真空场 光子统计性质

关 键 词:Kerr介质  耦合双原子  双模压缩真空场  光子统计性质
收稿时间:2003-03-12

Statistic properties of photon in the system of two coupling atoms interacting with two-mode squeezed vacuum field in Kerr medium
Fang Jia-Yuan,Huang Chun-Ji,Huang Zu-Hong and Zhou Ming.Statistic properties of photon in the system of two coupling atoms interacting with two-mode squeezed vacuum field in Kerr medium[J].Acta Physica Sinica,2004,53(4):1081-1087.
Authors:Fang Jia-Yuan  Huang Chun-Ji  Huang Zu-Hong and Zhou Ming
Abstract:The statistic properties of photons in the system of two-mode squeezing vacuum field interacting with two coupling atoms in Kerr medium are studied by means of quantum theory.The influences of coupling constant χ, initial squeezed parameter r and the atomic initial state are discussed. The results obtained by means of numerical method show that the photon bunching and anti-bunching appear alternately, and the correlation of the two modes of light is both positive and non-classical. The periodical collapse-revival phenomenon of the time evolution of the second-order coherence degree of the two-mode field appears due to the influence of the Kerr effect. The periods of the collapse-revival become short up to disappearance with increasing Kerr effect.
Keywords:Kerr medium  two coupling atoms  two -mode squeezed vacuum field  statistic properties of photon
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