Dynamical quantum phase transitions in the dissipative Lipkin-Meshkov-Glick model with proposed realization in optical cavity QED

被引:140
作者
Morrison, S. [1 ,2 ]
Parkins, A. S. [3 ]
机构
[1] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria
[2] Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-6020 Innsbruck, Austria
[3] Univ Auckland, Dept Phys, Auckland, New Zealand
关键词
D O I
10.1103/PhysRevLett.100.040403
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present an optical cavity QED configuration that is described by a dissipative version of the Lipkin-Meshkov-Glick model of an infinitely coordinated spin system. This open quantum system exhibits both first- and second-order nonequilibrium quantum phase transitions as a single, effective field parameter is varied. Light emitted from the cavity offers measurable signatures of the critical behavior, including that of the spin-spin entanglement.
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页数:4
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