Tunable interaction-free all-optical switching in a five-level atom-cavity system  

作　　者：Tiantian Liu Gongwei Lin Fengxue Zhou Li Deng Shangqing Gong Yueping Niu 刘甜甜;林功伟;周凤雪;邓立;龚尚庆;钮月萍(College of Physics,East China University of Science and Technology,Shanghai 200237,China)

机构地区：College of Physics, East China University of Science and Technology, Shanghai 200237, China

出　　处：《Chinese Optics Letters》2017年第9期99-103,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Sciences Foundation of China(Nos.11674094,11274112,91321101,and 61275215);the Fundamental Research Funds for the Central Universities(No.WM1313003)

摘　　要：A scheme is proposed for tunable all-optical switching based on the double-dark states in a five-level atom-cavity system. In the scheme, the output signal light of the reflection and the transmission channels can be switched on or off by manipulating the control field. When the control light is coupled to the atom-cavity system, the input signal light is reflected by the cavity. Thus, there is no direct coupling between the control light and the signal light. Furthermore, the position of the double-dark states can be changed by adjusting the coherent field, and,thus, the switching in our scheme is tunable. By presenting the numerical calculations of the switching efficiency,we show that this type of the interaction-free all-optical switching can be realized with high switching efficiency.A scheme is proposed for tunable all-optical switching based on the double-dark states in a five-level atom-cavity system. In the scheme, the output signal light of the reflection and the transmission channels can be switched on or off by manipulating the control field. When the control light is coupled to the atom-cavity system, the input signal light is reflected by the cavity. Thus, there is no direct coupling between the control light and the signal light. Furthermore, the position of the double-dark states can be changed by adjusting the coherent field, and,thus, the switching in our scheme is tunable. By presenting the numerical calculations of the switching efficiency,we show that this type of the interaction-free all-optical switching can be realized with high switching efficiency.

关 键 词：Tunable interaction-free all-optical switching in a five-level atom-cavity system 

分 类 号：TN256[电子电信—物理电子学]