We systematically investigate the four-wave mixing (FWM) spectrum in a dual-cavity hybrid optomechanical system, which is made up of one optical cavity with an ensemble of two-level atoms and another with a mechanical oscillator. In this work, we propose that the hybrid dual-cavity optomechanical system can be employed as a highly sensitive mass sensor due to the fact that the FWM spectrum generated in this system has a narrow spectral width and the intensity of the FWM can be easily tuned by controlling the coupling strength (cavity–cavity, atom–cavity). More fascinatingly, the dual-cavity hybrid optomechanical system can also be used as an all-optical switch in view of the easy on/off control of FWM signals by adjusting the atom-pump detuning to be positive or negative. The proposed schemes have great potential applications in quantum information processing and highly sensitive detection.

我们系统地研究了双腔混合光机械系统中的四波混合 (FWM) 光谱，该系统由一个光学腔和一个具有两能级原子集合的光学腔和另一个具有机械振荡器的光学腔组成。在这项工作中，我们提出混合双腔光机系统可以用作高灵敏度的质量传感器，因为该系统中产生的 FWM 光谱具有窄的光谱宽度并且 FWM 的强度可以很容易地调整通过控制耦合强度（腔 - 腔，原子 - 腔）。更有趣的是，双腔混合光机系统还可以用作全光开关，通过调节原子泵失谐为正或负，可以轻松控制 FWM 信号的开/关。