Twofold mechanical squeezing in a cavity optomechanical system
Twofold mechanical squeezing in a cavity optomechanical system
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腔体光机械系统中的双重机械挤压
DOI：
10.1103/physreva.98.023807
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发表时间：
2018-08-06
影响因子：
2.9
通讯作者：
Zheng, Shi-Biao
中科院分区：
文献类型：
--
作者：
Hu, Chang-Sheng;Yang, Zhen-Biao;Zheng, Shi-Biao
本文研究了一个光机械系统的动力学特性，其中一个可移动的反射镜腔包括一个简并的光学参量放大器，并由一个周期性调制的激光场驱动。结果表明，参量驱动和周期调制腔驱动的协同作用导致了可动腔镜作为机械振子时的双重压缩。这允许机械振荡器在一个正交（动量或位置）中的波动被减小到仅应用这两个驱动中的任一个不能达到的水平。除了基本利益，例如，在宏观水平上的量子效应的研究和量子到经典跃迁的探索，我们的结果在力和运动的超灵敏传感有潜在的应用。
We investigate the dynamics of an optomechanical system where a cavity with a movable mirror involves a degenerate optical parametric amplifier and is driven by a periodically modulated laser field. Our results show that the cooperation between the parametric driving and periodically modulated cavity driving results in a two-fold squeezing on the movable cavity mirror that acts as a mechanical oscillator. This allows the fluctuation of the mechanical oscillator in one quadrature (momentum or position) to be reduced to a level that cannot be reached by solely applying either of these two drivings. In addition to the fundamental interests, e.g., study of quantum effects at the macroscopic level and exploration of the quantum-to-classical transition, our results have potential applications in ultrasensitive sensing of force and motion.