Interaction-induced Lipkin-Meshkov-Glick model in a Bose-Einstein condensate inside an optical cavity

被引：32

作者：

Chen, Gang ^{[1
,2
]}

Liang, J. -Q. ^{[3
]}

Jia, Suotang ^{[1
]}

机构：

[1] Shanxi Univ, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China

[2] Shaoxing Coll Arts & Sci, Dept Phys, Shaoxing 312000, Peoples R China

[3] Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Peoples R China

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 22期

关键词：

INFINITELY COORDINATED SYSTEMS;

D O I：

10.1364/OE.17.019682

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper we present an experimentally feasible scheme to simulate a generalized Lipkin-Meskov-Glick model in a Bose-Einstein condensate coupled dispersively with an ultrahigh-finesse optical cavity. This obtained Hamiltonian has a unique advantage in that all parameters can be controlled independently by using Feshbach resonance technique, a pump laser along cavity axis and an external driving laser. By the proper choice of parameters, the macroscopic quantum coherent effect with a large amplitude can be successfully achieved. Comparing with the exist schemes, our proposal has a cleaner, perhaps significantly improved to observe this whole coherent effect. Finally, we predict a novel interaction-induced topological transition, which is an abrupt variation from p to zero of the Berry phase. (C) 2009 Optical Society of America

引用

页码：19682 / 19690

页数：9

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