Propagation of Light in an Ensemble of Tripod Level Atoms  

作　　者：LI Yong 

机构地区：[1]Institute of Theoretical Physics, the Chinese Academy of Sciences, Beijing 100080, China [2]Interdisciplinary Center of Theoretical Studies, the Chinese Academy of Sciences, Beijing 100080, China [3]Department of Physics, Hunan Normal University, Changsha 410081, China

出　　处：《Communications in Theoretical Physics》2006年第1X期135-140,共6页理论物理通讯（英文版）

基　　金：The,project supported by the China Postdoctoral Science Foundation under Grant No. 2004036309, National Natural Science Foundation of China under Grant Nos. 10447133 and 10574133, and HongKong K.C. Wong Education Foundation

摘　　要：We study the propagation of a quantum probe light in an ensemble of tripod level atoms when the atoms are coupled to two other classical control fields. First we calculate the dispersion properties, such as susceptibility and group velocity, of the probe light within such an atomic medium under the case of three-photon resonance via the dynamical algebra method of collective atomic excitations. Then we calculate the dispersion of the probe light in the case that two classical control fieMs have the different detunings to the relative atomic transitions. Our results show that in both cases the phenomenon of electromagnetically induced transparency can occur. Especially under the second case, we can find two transparency windows for the probe light.

关 键 词：group velocity collective excitation electromagnetically induced transparency 

分 类 号：O41[理学—理论物理]