摘要
利用非相对论性量子电动力学理论,研究了与双光子场作用的级联三能级原子的粒子布居数的时间演化规律,证明了粒子布居数呈现出周期性崩塌与回复效应,解释了在不同条件下系统表现出不同的崩塌与回复性质的原因,指出了中间能级的作用。
In this paper, we have investigated the time evolution of the atomic populations of a cascade three-level atom interacting with the two-photon field by means of non-relativestic QED. We verified that the expectation values of the atomic populations exhibit the periodic collapse and revival effect. The reason that the periodic collapse and revival effects of the photon-atom coupling system have different properities in different conditions is also discussed, and the role of the interatomic state is pointed out.
出处
《华中师范大学学报（自然科学版）》
CAS
CSCD
1993年第2期152-159,共8页
Journal of Central China Normal University：Natural Sciences
基金
国家自然科学基金
关键词
布居数
崩塌
三能级原子
双光子场
three-level atom
population
collapse and reviavl
two-photon laser
