压缩光力学:电磁诱导透明高阶边带放大

Squeezed Optomechanics:Amplifying on high-order sidebands in Electromagnetically Induced Transparency

从理论上研究了含有光学参量放大器的光力系统中的二阶边带现象.由于放大器会影响腔内光子数并产生光学压缩,探测光及光力二阶边带的透光率都将随之改变.发现透射谱可以被驱动场相位和非线性增益调节,其中二阶边带的透光率明显增强且线宽得到有效抑制.此外,光学参量放大器还为高阶边带快慢光转换提供了新的可能.这些结果有望在光传播与开关器件、弱信号精确测量等方面获得实际应用.

We studied the second-order transmission process of optomechanical system with an optical parametric amplifier （OPA） theoretically.We found that the number of photons can be strongly affected by OPA, to generate squeezing. Furthermore, the probe light and the transmittance of the second-order sideband process will also be influenced by OPA. In particular, the transmission spectrum can be adjusted by the phase of the drive field. And the light transmittance varies with the phase. Moreover, it is also affected by the strength of OPA, where the second-order sideband process can be greatly enhanced and the line width is effectively suppressed. On the other hand, the group delay in this hybrid system could be tuned by appropriate modulating OPA. Furthermore, the presence of OPA can realize a way of interconversion between fast and slow light in higher-order sideband, and these results are expected to be applied in light propagation, switching devices and weak signal precision measurement.