摘要
利用相互作用绘景 ,采用完全量子化理论 ,研究了充满Kerr介质的高Q腔中级联型三能级原子与压缩相干态光场相互作用系统粒子布居几率的时间演化规律 ;讨论了Kerr介质强度系数、光场压缩因子和光场相干振幅分量模平方对粒子布居几率的影响 .结果发现 :Kerr介质强度系数、光场压缩因子和光场相干振幅分量模平方都直接影响了粒子布居几率演化曲线的量子崩塌 -复苏的周期性和Rabi振荡频率 .而非线性的Kerr介质的存在会削弱光场与原子的相互作用 ;当场与原子的初始相互作用和Kerr效应增加到一定程度时 ,都会导致光场与原子的关联程度逐渐减弱直至退耦 .
In this paper, the atomic population evolution vs. time in the system of three-level cascade atom interacting with squeezed coherent light field in a Kerr medium is investigated by means of the interacting picture and the quantum theory. Meanwhile, the influence of Kerr medium μ, the squeezed light field factor γ and the coherent vibration amplitude |α| 2 of the field-atom on the atomic population is also discussed. It has been shown that the intensity coefficient μ of Kerr medium, the squeezed light field factor γ and the coherent vibration amplitude |α| 2 of the light field influence the quantum collapse-revival periodicity of the evolution curves of atomic population directly. And the non-linearity Kerr medium μ can weaken the interaction of the atom with the field. When Kerr medium μ and the interaction of the field-atom increase to a certain value, the correlation degree of light-field and atom will weaken and disappear.
出处
《江西师范大学学报（自然科学版）》
CAS
2002年第2期153-159,共7页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
江西省自然科学基金资助项目 (96 12 5 2 )
