标题： 基于腔光力学的纳米机械谐振器片上频率噪声抵消 显示英文标题

标题： On-Chip Frequency Noise Cancellation in Nanomechanical Resonators using Cavity Optomechanics

摘要： 理解并最小化纳米机械谐振器中的频率噪声源对于许多传感应用至关重要。 在本工作中，我们报告了一种与片上光学腔共集成的超相干边缘模纳米机械谐振器。 该器件结合了低热机械力噪声和低检测器噪声，使我们能够详细研究其固有频率波动。 我们发现两种机械模式的波动存在强烈相关性。 此外，我们通过非线性光机械转换在芯片上直接生成了两个模式频率差的信号。 这种“差频信号”具有显著降低的固有频率波动，并且如我们在原理验证实验中所建立的，可用于高精度的频率跟踪。 显示英文摘要

摘要： Understanding and minimizing the sources of frequency noise in nanomechanical resonators is crucial for many sensing applications. In this work, we report an ultracoherent perimeter-mode nanomechanical resonator co-integrated with an on-chip optical cavity. This device combines low thermomechanical force noise and low detector noise, allowing us to study its intrinsic frequency fluctuations in detail. We find that the fluctuations of two mechanical modes are strongly correlated. Moreover, we demonstrate the generation of a signal at the frequency difference between the two modes directly on chip via nonlinear optomechanical transduction. This `difference signal' has vastly reduced intrinsic frequency fluctuations and can be used for frequency tracking with high precision, as we establish in a proof-of-principle experiment.