Two-Time Intensity Correlations and Multiple Interference Mechanisms in a Driven Cascade Atom  

作　　者：王飞 胡响明 

机构地区：[1]Department of Physics, Huazhong Normal University, Wuhan 430079

出　　处：《Chinese Physics Letters》2007年第2期432-435,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 60378008 and 10574052.

摘　　要：We examine the intensity correlation functions of the two fluorescent fields that are emitted from the top and middle states of a doubly driven three-level atom in the cascade configuration. Novel interference effects are shown. （i） Both of the fluorescent fields have anticorrelations which can exist for long times when the applied fields are on the two-photon resonance and far off one.photon resonances. （ii） Both of the fluorescent fields have strong correlations when the applied fields are far off one- and two-photon resonances. In particular, the extremely strong correlation occurs for the photons emitted from the top state. The above phenomena are traced to the multiple interference mechanisms.We examine the intensity correlation functions of the two fluorescent fields that are emitted from the top and middle states of a doubly driven three-level atom in the cascade configuration. Novel interference effects are shown. （i） Both of the fluorescent fields have anticorrelations which can exist for long times when the applied fields are on the two-photon resonance and far off one.photon resonances. （ii） Both of the fluorescent fields have strong correlations when the applied fields are far off one- and two-photon resonances. In particular, the extremely strong correlation occurs for the photons emitted from the top state. The above phenomena are traced to the multiple interference mechanisms.

关 键 词：SPONTANEOUS EMISSION CANCELLATION ELECTROMAGNETICALLY INDUCED TRANSPARENCY QUANTUM INTERFERENCE RESONANCE FLUORESCENCE PHOTONIC CRYSTAL INVERSION SYSTEMS LASER 

分 类 号：O56[理学—原子与分子物理]