Tunneling Dynamics of Dipolar Bosonic System with Periodically Modulated s-wave Scattering  

作　　者：鱼自发 薛具奎 

机构地区：[1]Key Laboratory of Atomic & Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University

出　　处：《Communications in Theoretical Physics》2014年第5期565-570,共6页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.11274255 and 11305132;by the Natural Science Foundation of Gansu province under Grant No.2011GS04358;by Creation of Science and Technology of Northwest Normal University,China under Grant Nos.NWNU-KJCXGC-03-48,NWNU-LKQN-10-27,NWNU-LKQN-12-12,and NWNU-LKQN-11-26

摘　　要：Within the mean-field three-site Bose-Hubbard model, the tunneling dynamics of dipolar bosonic gas with a periodically modulation of s-wave scattering is investigated. The system experiences complex and rich coherent tunneling （CT）-coherent destruction of tunneling （CDT） transitions resulting from the correlated effect among the next-neighbor dipole-dipole interaction, the on-site interaction and the modulated s-wave scattering. In particular, The region of the modulated s-wave scattering for generating CT （CDT） is the widest （narrowest） when the on-site interaction and the next-neighbor dipole-dipole interaction have some correlated values, which are closely related to the tunneling energy and the interaction energy of the system. The correlated values for appearing CDT can be theoreticaJly gained from the tunneling energy and the interaction energy of the system.

关 键 词：ultra-cold dipolar gas triple-well coherent destruction of tunneling 

分 类 号：O431.2[机械工程—光学工程] TM935[理学—光学]