Ground States of Ultracold Spin-1 Atoms in a Deep Double-Well Optical Superlattice in a Weak Magnetic Field  

作　　者：郑公平 秦帅锋 王守阳 简闻天 

机构地区：[1]Department of Physics, Henan Normal University

出　　处：《Communications in Theoretical Physics》2013年第4期417-424,共8页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.11274095;the Program of Innovation Scientists and Technicians Troop Construction Projects in Henan Province under Grant No.114100510021;the Natural Science Basic Research Plan in Henan Province of China under Grant No.2011B140010;the Innovative Research Team(in Science and Technology)in University of Henan Province under Grant No.2010IRTSTHN002

摘　　要：The ground states of the ultracold spin-1 atoms superlattice in a weak magnetic field are obtained. It is shown trapped in a deep one-dimensional double-weU optical that the ground-state diagrams of the reduced double- well model are remarkably different for the antiferromagnetic and ferromagnetic condensates. The transition between the singlet state and nematic state is observed for the antiferromagnetic interaction atoms, which can be realized by modulating the tunneling parameter or the quadratic Zeeman energy. An experiment to distinguish the different spin states is suggested.

关 键 词：ground state ultracold atoms optical superlattice weak magnetic field 

分 类 号：O562[理学—原子与分子物理]