Realizing and controlling a Fano resonance is of fundamental significance in physics and may find applications in optical switching and sensitivity-enhanced biochemical sensing. Here we present a practicable scheme to realize Fano resonance and slow light in a quadratically coupled optomechanical system with membranes. It is shown that Fano resonance generation is precisely controlled by changing the frequency detuning between the cavity field and the control field in the quadratically coupled optomechanical system, while additional membrane inside the system can considerably establish a tunable switch between a single Fano resonance and double Fano resonances. In particular, the asymmetric line shape and the number of Fano resonance can be well tuned by the reflectivity of the membranes, the wavelength of the control field and the environment temperature. Furthermore, it is also shown that the slow light effects of the transmitted probe field can be obtained under two-phonon re...

中文翻译：

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带膜的二次耦合光机械系统中的光机械调谐Fano共振和慢光

实现和控制Fano共振在物理学中具有根本意义，并且可能会在光学开关和增强灵敏度的生化传感中找到应用。在这里，我们提出一个可行的方案，在带膜的二次耦合光机械系统中实现Fano共振和慢速光。结果表明，通过改变二次耦合光机械系统中腔场和控制场之间的频率失谐，可以精确地控制Fano共振的产生，而系统内部的附加膜可以在单Fano共振和双Fano之间建立可调谐的切换。共鸣。特别是，不对称的线形和Fano共振数可以通过膜的反射率很好地调节，控制区域的波长和环境温度。此外，还显示了在两个声子共振条件下可以获得透射的探测场的慢光效果。