The Phase Transition in Two-Photon Rabi Model Under Mean Field Approximation

被引：7
|
作者：
Hu, Xian-Lei [1 ,2 ]
机构：
[1] Hunan Normal Univ, Dept Phys, Minist Educ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Changsha 410081, Hunan, Peoples R China
[2] Hunan Normal Univ, Synerget Innovat Ctr Quantum Effects & Applicat, Changsha 410081, Hunan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2019年 / 58卷 / 11期
关键词：
Quantum phase transition; Mean field approximation; Rabi model; Squeezed state; QUANTUM;
D O I：
10.1007/s10773-019-04246-w
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The two-photon Rabi model describes the interaction between a two-level system and a single bosonic mode via two-photon process. By means of mean-field approximation, we investigate the quantum phase transition, which corresponds to a jump from the single well to double well structure for the energy function in the ultra-strong coupling regime. Taking the classical limit for the atom (two-level system) partner, we also study the squeezing of the cavity field in both of the normal and super-radiance phases.
引用
收藏
页码：3765 / 3772
页数：8
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