Zhao Bo, Zhou Ke-Xin, Wei Mei-Rong, Cao Jinke, Guo Qi
Opt Lett. 2024 Feb 1;49(3):486-489. doi: 10.1364/OL.510053.
We propose a scheme for generating nonreciprocal strong mechanical squeezing by using two-tone lasers to drive a spinning optomechanical system. For given driving frequencies, strong mechanical squeezing of the breathing mode in the spinning resonator can be achieved in a chosen driving direction but not in the other. The nonreciprocity originates from the Sagnac effect caused by the resonator's spinning. We also find the classical nonreciprocity and the quantum nonreciprocity can be switched by simply changing the angular velocity of the spinning resonator. We show that the scheme is robust to the system's dissipations and the mechanical thermal noise. This work may be meaningful for the study of nonreciprocal device and quantum precision measurement.
我们提出了一种通过使用双频激光驱动旋转光机械系统来产生非互易强机械压缩的方案。对于给定的驱动频率，在旋转谐振器中，呼吸模式的强机械压缩可以在选定的驱动方向上实现，而在另一个方向上则无法实现。这种非互易性源于谐振器旋转引起的萨格纳克效应。我们还发现，只需改变旋转谐振器的角速度，就可以切换经典非互易性和量子非互易性。我们表明，该方案对系统的耗散和机械热噪声具有鲁棒性。这项工作对于非互易器件和量子精密测量的研究可能具有重要意义。
