论文标题
多模冷 - 阻尼光学机电延迟反馈
Multimode cold-damping optomechanics with delayed feedback
论文作者
论文摘要
我们研究了具有多种机械共振的时间延迟在冷阻尼光学机械方面的作用。对于瞬时电子响应，最近在\ textit {phys中显示了它。莱特牧师。 \ textbf {123}，203605（2019）}，一个反馈回路足以同时从许多机械模式中删除热噪声。尽管电子设备的固有延迟响应可以诱导相邻模式之间的单个模式和相互加热，但我们建议通过引入反馈回路的额外时间延迟来抵消这种有害效应。对于有损耗的空腔和宽带反馈，我们得出了量子兰格文鸟方程形式中机械模式的最终占用的分析结果。对于频率退化的模式，集体效应主导着，模仿了类似于迪克超级和亚缩放的行为。这些分析结果，通过瞬态和稳态动力学的数值模拟证实，可以找到有效的单模或多模反馈光学力学的适当条件和策略。
We investigate the role of time delay in cold-damping optomechanics with multiple mechanical resonances. For instantaneous electronic response, it was recently shown in \textit{Phys. Rev. Lett. \textbf{123}, 203605 (2019)}, that a single feedback loop is sufficient to simultaneously remove thermal noise from many mechanical modes. While the intrinsic delayed response of the electronics can induce single mode and mutual heating between adjacent modes, we propose to counteract such detrimental effects by introducing an additional time delay to the feedback loop. For lossy cavities and broadband feedback, we derive analytical results for the final occupancies of the mechanical modes within the formalism of quantum Langevin equations. For modes that are frequency degenerate collective effects dominate, mimicking behavior similar to Dicke super- and subradiance. These analytical results, corroborated with numerical simulations of both transient and steady state dynamics, allow to find suitable conditions and strategies for efficient single or multimode feedback optomechanics.
