Landau-Zener tunneling in a nonlinear three-level system

doi:10.1103/PhysRevA.74.033414

CORC > 北京大学 > 信息科学技术学院

	Landau-Zener tunneling in a nonlinear three-level system
	Wang, Guan-Fang ; Ye, Di-Fa ; Fu, Li-Bin ; Chen, Xu-Zong ; Liu, Jie
刊名	physical review a
	2006
关键词	INTERFERENCE TRANSITION MODEL
DOI	10.1103/PhysRevA.74.033414
英文摘要	We present a comprehensive analysis of the Landau-Zener tunneling of a nonlinear three-level system in a linearly sweeping external field. We find the presence of nonzero tunneling probability in the adiabatic limit (i.e., very slowly sweeping field) even for the situation that the nonlinear term is very small and the energy levels keep the same topological structure as that of the linear case. In particular, the tunneling is irregular with showing an unresolved sensitivity on the sweeping rate. For the case of fast-sweeping fields, we derive an analytic expression for the tunneling probability with stationary phase approximation and show that the nonlinearity can dramatically influence the tunneling probability when the nonlinear "internal field" resonate with the external field. We also discuss the asymmetry of the tunneling probability induced by the nonlinearity. Physics behind the above phenomena is revealed and possible application of our model to triple-well trapped Bose-Einstein condensate is discussed.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000241067100101&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Optics; Physics, Atomic, Molecular & Chemical; SCI(E); EI; 63; ARTICLE; 3; 74
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/398404]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Wang, Guan-Fang,Ye, Di-Fa,Fu, Li-Bin,et al. Landau-Zener tunneling in a nonlinear three-level system[J]. physical review a,2006.
APA	Wang, Guan-Fang,Ye, Di-Fa,Fu, Li-Bin,Chen, Xu-Zong,&Liu, Jie.(2006).Landau-Zener tunneling in a nonlinear three-level system.physical review a.
MLA	Wang, Guan-Fang,et al."Landau-Zener tunneling in a nonlinear three-level system".physical review a (2006).