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 

作者机构：Department of Physics Henan Normal University 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2013年第59卷第4期

页      面：417-424页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0704[理学-天文学] 0702[理学-物理学] 

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 

主　　题：超冷原子 超晶格 弱磁场 基态 双阱 光学 分拆 反铁磁性 

摘      要：The ground states of the ultracold spin-1 atoms trapped in a deep one-dimensional double-well optical superlattice in a weak magnetic field are obtained. It is shown 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.