Application of non-Hermitian Hamiltonian model in open quantum optical systems

• 作者: Hong Wang Yue Qin Jingxu Ma Heng Shen Ying Hu Xiaojun Jia
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: GENERAL
• 页码范围: 240-245
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/abda30

摘要

Non-Hermitian systems have observed numerous novel phenomena and might lead to various applications.Unlike standard quantum physics,the conservation of energy guaranteed by the closed system is broken in the non-Hermitian system,and the energy can be exchanged between the system and the environment.Here we present a scheme for simulating the dissipative phase transition with an open quantum optical system.The competition between the coherent interaction and dissipation leads to the second-order phase transition.Furthermore,the quantum correlation in terms of squeezing is studied around the critical point.Our work may provide a new route to explore the non-Hermitian quantum physics with feasible techniques in experiments.