The sign of quantum interference (constructive or destructive) based on cavity optomechanics is crucial for observing quantum phenomena and designing high-sensitivity sensors with an integrable structure. Here, we propose an efficient scheme to generate constructive interference and optomechanically induced absorption (OMIA) in a hybrid atom–cavity optomechanical system. Using experimentally achievable parameters, we theoretically demonstrate that a gain-type OMIA dip with the extremely narrow linewidth and the enhanced spectral intensity can be modulated by an assisted atom that is excited by an external control field. More importantly, we report that a precise mass sensor is achieved by employing an observable correlation between the OMIA dip and the added mass deposited on the mechanical object. With the help of the back-action cooling of the mechanical object, we identify that the detection sensitivity and minimum resolution of the mass sensor can reach $3.14\mathrm{MHz}/\mathrm{ng}$ and $1\mathrm{fg}$, respectively.

中文翻译：

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混合光机系统中的增益型光机感应吸收和精确质量传感器

基于腔体光力学的量子干涉符号（相长或相消）对于观察量子现象和设计具有可集成结构的高灵敏度传感器至关重要。在这里，我们提出了一种在原子-腔混合光机械系统中产生相长干涉和光机械诱导吸收（OMIA）的有效方案。使用实验上可达到的参数，我们从理论上证明了可以通过外部控制场激发的辅助原子来调制具有极窄线宽和增强光谱强度的增益型OMIA倾角。更重要的是，我们报告说，通过在OMIA倾角和沉积在机械物体上的附加质量之间采用可观察的相关性，可以实现精确的质量传感器。$3.14\mathrm{兆赫}/\mathrm{ng}$ 和 $\mathrm{1个}\mathrm{fg}$， 分别。