Giant Kerr nonlinearity induced by interacting quantum coherences from decays and incoherent pumping  

作　　者：白艳锋 杨文星 韩定安 喻小强 

机构地区：[1]Department of Physics,Southeast University [2]Department of Physics,Foshan University

出　　处：《Chinese Physics B》2012年第11期266-270,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.10904015,61008063,11004030,and 11074036)

摘　　要：A scheme for generating the giant enhancement of the Kerr nonlinearity in a four-level system with the quantum coherences from the decays and the incoherent pumping is proposed. Compared with that generated in a general four- level system, the Kerr nonlinearity can be enhanced by several orders of magnitude with vanishing linear absorption. By using the numerical results, we show that the remarkable enhancement should be attributed to the interaction of the quantum coherences from the decays and the incoherent pumping.A scheme for generating the giant enhancement of the Kerr nonlinearity in a four-level system with the quantum coherences from the decays and the incoherent pumping is proposed. Compared with that generated in a general four- level system, the Kerr nonlinearity can be enhanced by several orders of magnitude with vanishing linear absorption. By using the numerical results, we show that the remarkable enhancement should be attributed to the interaction of the quantum coherences from the decays and the incoherent pumping.

关 键 词：Kerr nonlinearity coherence induced by incoherent pumping spontaneously generatedcoherence 

分 类 号：O431.2[机械工程—光学工程]