Controllable chaos in the coupled waveguide-optomechanical system with phase shifter  

作　　者：Deng-Wei Zhang Pei-Qi Qin Li-Li Zheng Zhi-Ming Zhan Xin-You Lü 

机构地区：[1]Department of Mathematics and Physics,Luoyang Institute of Science and Technology,Luoyang 471023,China [2]School of Computer and Information Engineering,School of Software,Luoyang Institute of Science and Technology,Luoyang 471023,China [3]School of Artificial Intelligence,Jianghan University,Wuhan 430056,China [4]School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2025年第4期26-34,共9页中国科学:物理学、力学、天文学(英文版)

基　　金：supported by the National Science Fund for Distinguished Young Scholars of China(Grant No.12425502);the National Natural Science Foundation of China(Grant Nos.12304395,and 12004202);the National Key Research and Development Program of China(Grant No.2021YFA1400700);the Fundamental Research Funds for the Central Universities(Grant No.2024BRA001);the Jianghan University Natural Science General Project(Grant No.2021yb028);the Luoyang Institute of Science and Technology Natural Science General Project(Grant No.21010777);the Chunhui Project Foundation of the Education Department of China(Grant No.HZKY20220337);the Natural Science Foundation of Hubei Province(Grant No.2023AFB891)。

摘　　要：We theoretically investigate chaotic dynamics in an optomechanical system composed of a whispering-gallery-mode(WGM)microresonator and a sensor.We find that tuning the optical phase using a phase shifter and modifying the coupling strength via a unidirectional waveguide(IWG)can induce chaotic motion.The underlying reason for this phenomenon is that adjusting the phase and coupling strength via the phase shifter and IWG bring the system close to an exceptional point(EP),where field localization dynamically enhances the optomechanical nonlinearity,leading to the generation of chaotic motion.In addition,due to the sensitivity of chaos to phase in the vicinity of the EP,we propose a theoretical scheme to measure the optical phase perturbations using chaos.Our work may offer an alternative approach to chaos generation with current experimental technology and provide theoretical guidance for optical signal processing and chaotic secure communication.

关 键 词：cavity optomechanics CHAOS exceptional point 

分 类 号：O41[理学—理论物理]