Liu Shaopeng, Yang Wen-Xing, Zhu Zhonghu, Shui Tao, Li Ling
Opt Lett. 2018 Jan 1;43(1):9-12. doi: 10.1364/OL.43.000009.
We propose an efficient scheme to generate quadrature squeezing of a higher-order sideband spectrum in an optomechanical system. This is achieved by exploiting a well-established optomechanical circumstance, where a second-order nonlinearity is embedded into the optomechanical cavity driven by a strong control field and a weak probe pulse. Using experimentally achievable parameters, we demonstrate that the second-order nonlinearity intensity and the frequency detuning of a control field allow us to modify the amplitude of higher-order sidebands and improve the amount of squeezing of a higher-order sideband spectrum. Furthermore, in the presence of a strong second-order nonlinearity, an optimizing quadrature squeezing of a higher-order sideband spectrum can be achieved, which provides a practical opportunity to design the squeezed frequency combs and other precision measurements.
我们提出了一种在光机械系统中产生高阶边带谱正交压缩的有效方案。这是通过利用一种成熟的光机械环境来实现的，即在由强控制场和弱探测脉冲驱动的光机械腔中嵌入二阶非线性。利用实验可实现的参数，我们证明二阶非线性强度和控制场的频率失谐使我们能够修改高阶边带的幅度，并提高高阶边带谱的压缩量。此外，在存在强二阶非线性的情况下，可以实现高阶边带谱的优化正交压缩，这为设计压缩频率梳和其他精密测量提供了一个实际机会。
