First-order quantum phase transition and entanglement in the Jaynes-Cummings model with a squeezed light

被引：0
|
作者：
Tang, Chun-Qi [1 ]
Shen, Li-Tuo [1 ]
机构：
[1] Fuzhou Univ, Coll Phys & Informat Engn, Fujian Key Lab Quantum Informat & Quantum Opt, Fuzhou 350116, Peoples R China
来源：
CHINESE PHYSICS B | 2023年 / 32卷 / 07期
关键词：
Jaynes-Cummings model; quantum phase transition; entanglement; RABI MODEL;
D O I：
10.1088/1674-1056/acb9f0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the quantum phase transition and entanglement in the Jaynes-Cummings model with squeezed light, utilize a special transformation method to obtain the analytical ground state of the model within the near-resonance regime, and numerically verify the validity of the analytical ground state. It is found that the ground state exhibits a first-order quantum phase transition at the critical point linearly induced by squeezed light, and the ground state entanglement reaches its maximum when the qubit-field coupling strength is large enough at the critical point.
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页数：6
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