腔光力学耦合振子非平衡系统的不可逆动力学  

Irreversible Dynamics of Nonequilibrium System of Cavity Optomechanical Coupled Oscillators

作　　者：邓宁宁 杨成[1] 盛继腾 武海斌 Deng Ningning;Yang Cheng;Sheng Jiteng;Wu Haibin(State Key Laboratory of Precision Spectroscopy,Institute of Quantum Science and Precision Measurement,East China Normal University,Shanghai 200241,China)

机构地区：[1]华东师范大学精密光谱科学与技术国家重点实验室,量子科学与精密测量研究院,上海200241

出　　处：《激光与光电子学进展》2025年第1期329-337,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(12222404,12304393)。

摘　　要：提出在腔光力学系统中通过光力作用实现三个全同振子的近邻耦合网络,研究不同温度梯度和光力学耦合下非平衡瞬态热传输的不可逆动力学特性,并最终趋于稳态。基于量子相空间方法的熵评估理论框架,构建了适用于瞬态过程的熵动力学评估方案。在对称温度热库下,研究了从弱耦合到强耦合情况下熵动力学从单调向振荡行为的转变;在非对称温度热库下,强耦合状态下的熵动力学表现出非规则振荡行为。分析结果表明了系统熵的演化和热力学不可逆行为强烈依赖于内部耦合和热库温度,为实验上准确测量非平衡瞬态的不可逆动力学演化提供了参考,为发展腔光力操控的热管理器件提供了新的思路。This paper proposes the implementation of a neighboring coupling network of three identical oscillators in a cavity optomechanical system using optomechanical interactions.The objective is to investigate the irreversible dynamics characteristics of nonequilibrium transient heat transport driven by different temperature gradients and optomechanical couplings,eventually converging to a nonequilibrium steady state.A theoretical framework of entropy assessment,based on the quantum phase space approach,is used to evaluate the entropy dynamics applicable to transient processes.The study explores the transition of entropy dynamics from monotonic to oscillatory behavior under symmetric temperature thermal reservoirs from the weak coupling regime into strong coupling regime,further investigating the entropy dynamics under asymmetric temperature thermal reservoirs,where the strong coupling leads to non-regular oscillatory behavior.The analytical results show that the evolution of system entropy and thermodynamic irreversible behavior are significantly affected by the internal coupling and thermal reservoir temperatures.Furthermore,the results offer a guide for accurately measuring the evolution of irreversible dynamics in nonequilibrium transient processes in experiments,providing new ideas for the development of thermal management devices via cavity optomechanical manipulation.

关 键 词：腔光力学 耦合振子 非平衡系统 熵 不可逆 

分 类 号：O436[机械工程—光学工程]