论文标题
连续量子光学力学的光子和声子光谱功能
Photon and Phonon Spectral-Functions for Continuum Quantum Optomechanics
论文作者
论文摘要
我们研究了通过纳米级波导中通过布里鲁因散射型汉密尔顿相互作用的多模式光子和声子传播多模式光子和声子的许多粒子现象。我们得出光子和声子延迟了格林的功能，并提取了其光谱函数，以应用平均场理论的分解近似。自能的实际部分为光子和声子提供了重新归一化的能量转移。除了传统的泄漏外，假想部分还提供了由于许多粒子现象引起的有效光子和声子阻尼率。结果将量子光力学的简单光谱函数扩展到连续量子光学机械。我们介绍了热声子对光子有效阻尼速率的影响，并考虑特定光子场在波导中激发的情况，对于声子冷却方案非常重要。
We study many-particle phenomena of propagating multi-mode photons and phonons interacting through Brillouin scattering-type Hamiltonian in nanoscale waveguides. We derive photon and phonon retarded Green's functions and extract their spectral functions in applying the factorization approximation of the mean-field theory. The real part of the self-energy provides renormalization energy shifts for the photons and the phonons. Besides the conventional leaks, the imaginary part gives effective photon and phonon damping rates induced due to many-particle phenomena. The results extend the simple spectral functions of quantum optomechanics into continuum quantum optomechanics. We present the influence of thermal phonons on the photon effective damping rates, and consider cases of specific photon fields to be excited within the waveguide and which are of importance for phonon cooling scenarios.
