论文标题
通过光学机械实验实现的挤压机械振荡器的量子运动
Quantum motion of a squeezed mechanical oscillator attained via a optomechanical experiment
论文作者
论文摘要
我们实验研究了在光腔中嵌入的参数调节的膜谐振器中实现的机械挤压状态。我们证明，即使在中等温暖的振荡器中，也可以通过分析运动边带来揭示和量化挤压动力学的量子特征。我们提供了一个理论框架，用于定量解释观测值并与实验进行扩展比较。一个值得注意的结果是，每个运动侧带的光谱形状提供了量子机械挤压状态的明确特征，而无需绝对校准，特别是在挤压正交中的残余波动降低到零点以下的状态下。
We experimentally investigate a mechanical squeezed state realized in a parametrically-modulated membrane resonator embedded in an optical cavity. We demonstrate that a quantum characteristic of the squeezed dynamics can be revealed and quantified even in a moderately warm oscillator, through the analysis of motional sidebands. We provide a theoretical framework for quantitatively interpreting the observations and present an extended comparison with the experiment. A notable result is that the spectral shape of each motional sideband provides a clear signature of a quantum mechanical squeezed state without the necessity of absolute calibrations, in particular in the regime where residual fluctuations in the squeezed quadrature are reduced below the zero-point level.
