论文标题
侧带未固定体制中的光学机械系统中的相干反馈
Coherent feedback in optomechanical systems in the sideband-unresolved regime
论文作者
论文摘要
准备靠近其运动量子地面的宏观机械谐振器并与光产生纠缠，这为研究基本物理学和开发新一代的量子应用提供了巨大的机会。在这里，我们提出了一个实验有趣的方案，该方案特别适合于边带未解决的制度中的系统，基于与线性的，被动的光学组件相干反馈，以实现与光学机械设备的地面稳定冷却和光子孔纠缠的产生。我们发现，通过引入附加的被动元件 - 狭窄的线宽腔或带有延迟线的镜子 - 深层侧带未分辨式的光学机械系统将表现出类似于侧带分辨的动力学。采用这种新方法，地面冷却和光力纠缠的实验性实现符合当前当前最新的高Q机械谐振器的范围。
Preparing macroscopic mechanical resonators close to their motional quantum groundstate and generating entanglement with light offers great opportunities in studying fundamental physics and in developing a new generation of quantum applications. Here we propose an experimentally interesting scheme, which is particularly well suited for systems in the sideband-unresolved regime, based on coherent feedback with linear, passive optical components to achieve groundstate cooling and photon-phonon entanglement generation with optomechanical devices. We find that, by introducing an additional passive element - either a narrow linewidth cavity or a mirror with a delay line - an optomechanical system in the deeply sideband-unresolved regime will exhibit dynamics similar to one that is sideband-resolved. With this new approach, the experimental realization of groundstate cooling and optomechanical entanglement is well within reach of current integrated state-of-the-art high-Q mechanical resonators.
