论文标题
在具有特殊点的光力学系统中产生子阈值声子
Subthreshold phonon generation in an optomechanical system with an exceptional point
论文作者
论文摘要
考虑了基于通过语音模式相互交互的两个光学模式组成的光力学系统的声子激光器。令人兴奋的外浪刺激了泵送的角色。结果表明，在外波的某个幅度下，存在特殊点。当外浪振幅小于与特殊点相对应的一个时，会发生特征频率的分裂。可以证明，在这种情况下，外波振幅的周期性调节可能会导致光子和声子同时生成，甚至低于光力不稳定性的阈值。
A phonon laser based on an optomechanical system consisting of two optical modes interacting with each other via a phononic mode is considered. An external wave exciting one of the optical modes plays a role of the pumping. It is shown that at some amplitude of the external wave an exceptional point exists. When the external wave amplitude is less than one corresponding to the exceptional point, the splitting of the eigenfrequencies takes place. It is demonstrated that in this case, the periodic modulation of the external wave amplitude can result in simultaneous generation of photons and phonons even below the threshold of optomechanical instability.
