量子光学学报, 2011, 17 (4): 289, 网络出版: 2011-12-01
四能级原子系统中的电磁感应透明及光开关现象
The EIT Effects and Optical Switch of Tripod-type Four-level Atom System
电磁感应透明 量子干涉 开关效应 非线性效应 electromagnetically induced transparency quantum interference optical switching the nonlinear effects
摘要
研究了闭合的Tripod-type 四能级原子系统,使系统在三模光场相互作用下,利用量子干涉对其进行研究。结果显示在一定条件下,当改变控制场的拉比频率时,探测场对应的介质色散曲线可以实现从反常色散到正常色散的转变,出现了开关效应。并且在一定条件下共振—近共振区域会出现电磁感应透明。
Abstract
The quantum effects of a tripod-type four-level atom system interacting with three light fileds are studied. Under certain conditions, our calculations show that along with the change of Rabi frequencies of the driving field, the curve of dispersion changes from abnormal chromatic dispersion to normal chromatic dispersion, thus the optical switching effect has appeared. When the parameter is certain, there is a phenomenon of electromagnetic induction transparency in resonance near resonance case.
张振清, 刘正东, 赵顺才, 郑军. 四能级原子系统中的电磁感应透明及光开关现象[J]. 量子光学学报, 2011, 17(4): 289. ZHANG Zhen-qing, LIU Zheng-dong, ZHAO Shun-cai, ZHENG Jun. The EIT Effects and Optical Switch of Tripod-type Four-level Atom System[J]. Acta Sinica Quantum Optica, 2011, 17(4): 289.