Studying Quasi-Parametric Amplifications: From Multiple PT -Symmetric Phase Transitions to Non-Hermitian Sensing

被引：0

作者：

Wu, Xiaoxiong ^{[1
]}

Bai, Kai ^{[2
,3
]}

Yu, Penghong ^{[1
]}

Dong, Zhaohui ^{[1
]}

He, Yanyan ^{[1
]}

Ma, Jingui ^{[4
]}

Yakovlev, Vladislav V. ^{[5
]}

Xiao, Meng ^{[2
,3
,8
]}

Chen, Xianfeng ^{[1
,6
,7
]}

Yuan, Luqi ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Phys & Astron, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China

[2] Wuhan Univ, Minist Educ, Key Lab Artificial Micro & Nanostruct, Wuhan 430072, Peoples R China

[3] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China

[4] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA CICIFSA, Sch Phys & Astron, Key Lab Laser Plasmas MOE, Shanghai 200240, Peoples R China

[5] Texas A&M Univ, College Stn, TX 77843 USA

[6] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China

[7] Jinan Inst Quantum Technol, Jinan 250101, Peoples R China

[8] Wuhan Inst Quantum Technol, Wuhan 430206, Peoples R China

来源：

ACS PHOTONICS | 2024年 / 11卷 / 11期

基金：

中国国家自然科学基金;

关键词：

non-Hermiticity; quasi-parametric amplification; parity-time symmetry; phase transition; non-Hermitiansensing; EXCEPTIONAL POINTS; BROAD-BAND; PHOTONICS; EFFICIENT;

D O I：

10.1021/acsphotonics.4c01071

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Quasi-parametric amplification (QPA) is a nonlinear interaction in which the idler wave is depleted through a loss mechanism. QPA plays an important role in signal amplification in ultrafast photonics and quantum light generation. In this report, we explore the generalized features characterized by non-Hermitian parity-time ( PT ) symmetry in the QPA process and uncover multiple PT -symmetric phase transitions in such a QPA process in which transitions are ultrasensitive to external parameters. In particular, we demonstrate the feasibility of detection of 10-11 inhomogeneities of the doped absorber, which is several orders of magnitude more sensitive than similar measurements performed in a linear absorption regime. In doing so, we reveal a family of PT -symmetric phase transitions appearing in the QPA process and provide a distinctive nonlinear optical sensing mechanism for precise optical measurements.

引用

页码：4662 / 4670

页数：9

共 23 条

[21] Macroscopic quantum states in Dicke model of PT-symmetric non-Hermitian Hamiltonian and superradiant phase with imaginary atomic population
Liu, Ni
Huang, Shan
Liang, J. -Q.
RESULTS IN PHYSICS, 2022, 40
[22] Bulk-edge correspondence and stability of multiple edge states of a PT-symmetric non-Hermitian system by using non-unitary quantum walks
Kawasaki, Makio
Mochizuki, Ken
Kawakami, Norio
Obuse, Hideaki
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2020, 2020 (12):
[23] A non-Hermitian PT symmetric Bose-Hubbard model:: eigenvalue rings from unfolding higher-order exceptional points
Graefe, E. M.
Guenther, U.
Korsch, H. J.
Niederle, A. E.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2008, 41 (25)

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