Exotic quantum phase transitions in a Bose-Einstein condensate coupled to an optical cavity

被引：48
作者：
Chen, Gang [1 ,2 ,3 ]
Wang, Xiaoguang [4 ]
Liang, J. -Q. [3 ]
Wang, Z. D. [1 ,2 ]
机构：
[1] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[2] Univ Hong Kong, Ctr Theoret & Computat Phys, Hong Kong, Hong Kong, Peoples R China
[3] Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Peoples R China
[4] Zhejiang Univ, Dept Phys, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China
来源：
PHYSICAL REVIEW A | 2008年 / 78卷 / 02期
关键词：
D O I：
10.1103/PhysRevA.78.023634
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An extended Dicke model, which includes atom-atom interactions and a driving classical laser field, is established for a Bose-Einstein condensate inside an ultrahigh-finesse optical cavity. A feasible experimental setup with a strong atom-field coupling is proposed, where most parameters are easily controllable and thus the predicted a second-order superradiant-normal phase transition may be detected by measuring the ground-state atomic population. More intriguingly, second-order phase transition from the superradiant phase to the "Mott" phase is also revealed. In addition, a rich and exotic phase diagram is presented.
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页数：5
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