虚光场在原子的周期衰变和回复效应中的影响  

INFLUENCE OF THE VIRTUAL PHOTON FIELD ON THE PERIODIC DECAY AND REVIVAL EFFECT OF AN ATOM

作　　者：彭金生[1] 李高翔[1] 周鹏[2] 

机构地区：[1]华中师范大学物理系,武汉430070 [2]湖北教育学院物理系,武汉430060

出　　处：《物理学报》1991年第7期1042-1048,共7页Acta Physica Sinica

基　　金：国家自然科学基金

摘　　要：本文利用非相对论量子电动力学理论,研究了在旋波近似(RWA)和非旋波近似下与双光子场作用的二能级原子算符的时间演化规律,通过数值法和解析法论证了虚光场是原子的周期衰变和回复呈现量子噪声的根源,并且说明了可忽略虚光场对回复时间影响的原因。In this paper, we investigate the time evolution of the atomic operators of a two-level atom interacting with the field via a two-photon process within and without the rotating-wave approximation (RWA) by means of non-relativestic QED. We also verified that the virtual photon field is the cause for quantum chaos embodied by the periodic decay and revival effect of the atom using the numerical and analytic methods, and discussed the reason of neglecting the in-fluence of the virtual photon field on the revival time.

关 键 词：虚光场 原子 衰变 回复效应 

分 类 号：O431[机械工程—光学工程]