论文标题
光力谐振器的单重反馈冷却
Single-laser feedback cooling of optomechanical resonators
论文作者
论文摘要
基于测量的控制已成为一项重要技术，可以在纯量子状态下为量子信息处理和量子传感的应用制备机械谐振器。通常，这需要两个单独的通道，一个用于探测运动，另一个用于谐振器上。在这项工作中，我们分析并实验证明了单重反馈冷却的技术，其中一种激光用于探测和控制机械运动。我们使用分析模型和实验显示，只要满足某些稳定性要求，反馈冷却是可行的。我们的结果表明，除了具有实验性可行的结构外，单重反馈的干扰效应实际上还可用于在某些参数方面增强冷却。
Measurement-based control has emerged as an important technique to prepare mechanical resonators in pure quantum states for applications in quantum information processing and quantum sensing. Conventionally this has required two separate channels, one for probing the motion and another one acting back on the resonator. In this work, we analyze and experimentally demonstrate a technique of single-laser feedback cooling, where one laser is used for both probing and controlling the mechanical motion. We show using an analytical model and experiments that feedback cooling is feasible in this mode as long as certain stability requirements are fulfilled. Our results demonstrate that, in addition to being more experimentally feasible construction, the interference effects of the single-laser feedback can actually be used to enhance cooling at some parameter regimes.
