基于量子干涉效应的多能级系统自发辐射研究  

Spontaneous Emission from Multi level System via Quantum Interference

作　　者：邓乐[1,2] 王蔚生[1,2] 李毅敏 丁良恩[1,2] 王祖赓[1,2] 

机构地区：[1]华东师范大学量子光学开放研究实验室 [2]华东师范大学物理系

出　　处：《量子光学学报》1999年第2期89-97,共9页Journal of Quantum Optics

基　　金：国家自然科技基金

摘　　要：本文研究了一个多能级系统的量子干涉效应，该能级中三个相邻分离上能级通过一相干驱动场与一个低能级耦合，同时通过真空模与另一低能级耦合。推导出该系统发生量子干涉效应的条件、能级布居对驱动场频率的依赖关系和自发辐射光谱，描述了与具有两个相邻分离上能级的能级系统所不相同的关于自发辐射相涨、相消现象以及布居数捕获现象的特征。We give an unified method to study quantum interference in a multi level system where there is three close lying upper levels coupled by the same vacuum modes to one lower lever and driven by a strong field to another lower lever. We have found the conditions for quantum interference, the relation between spontaneous emission intensity and the frequency of drive field, and the spontaneous emission spectrum. Some other features of spontaneous emission cancellation, enhancement and population evolution, which are different from the system with two closely separate levels, are described in detail.

关 键 词：量子干涉 自发辐射相消 多能级系统 

分 类 号：O431[机械工程—光学工程]