Higher-order exceptional point in a blue-detuned non-Hermitian cavity optomechanical system

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成果类型：

期刊论文

作者：

Xiong, Wei;Li, Zhuanxia;Zhang, Guo-Qiang;Wang, Mingfeng;Li, Hai-Chao;...

作者机构：

[Wang, Mingfeng; Li, Zhuanxia; Xiong, Wei] Wenzhou Univ, Dept Phys, Wenzhou 325035, Zhejiang, Peoples R China.

[Zhang, Guo-Qiang] Hangzhou Normal Univ, Sch Phys, Hangzhou 311121, Peoples R China.

[Li, Hai-Chao] Hubei Normal Univ, Coll Phys & Elect Sci, Huangshi 435002, Peoples R China.

[Luo, Xiao-Qing] Univ South China, Sch Elect Engn, Hunan Prov Key Lab Ultrafast Micro Nano Technol &, Hengyang 421001, Peoples R China.

[Chen, Jiaojiao] Anhui Univ, Sch Phys & Optoelect Engn, Hefei 230601, Peoples R China.

语种：

英文

期刊：

PHYSICAL REVIEW A

ISSN：

2469-9926

年：

2022

卷：

106

期：

页码：

033518

DOI：

10.1103/PhysRevA.106.033518

基金类别：

key program of the Natural Science Foundation of Anhui [KJ2021A1301]; National Natural Science Foundation of China [12205069, 11904201, 12104214]; Natural Science Foundation of Hunan Province of China [2020JJ5466]

机构署名：

本校为其他机构

院系归属：

电气工程学院

摘要：

Higher-order exceptional points (EPs) in non-Hermitian systems have attracted great interest due to their advantages in sensitive enhancement and distinct topological features. However, realization of such EPs is still a challenge because more fine-tuning parameters are generically required in quantum systems, compared to the second-order EP (EP2). Here, we propose a non-Hermitian three-mode optomechanical system in the blue-sideband regime for predicting the third-order EP (EP3). By deriving the pseudo-Hermitian condition for the proposed system, one cavity with loss and the other with gain m...

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Higher-order exceptional point in a blue-detuned non-Hermitian cavity optomechanical system

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