Robust stationary mechanical squeezing in a kicked quadratic optomechanical system
Robust stationary mechanical squeezing in a kicked quadratic optomechanical system
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DOI：
10.1103/physreva.89.023849
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发表时间：
2014-02-28
影响因子：
2.9
通讯作者：
Vitali, D.
中科院分区：
文献类型：
--
作者：
Asjad, M.;Agarwal, G. S.;Vitali, D.
我们提出了一种在脉冲激光驱动的二次耦合光力学系统中产生机械谐振腔稳健性静止压缩态的方案。腔内光子数呈现周期性的强峰，使机械谐振器感受到的有效谐波势突然变硬。这些“光学弹簧踢”倾向于挤压谐振器的位置，并且由于与波动-耗散过程的相互作用，在现实情况下，即使从适度的“预冷”初始热状态开始，也可以产生超过10db的压缩的静止状态。
We propose a scheme for the generation of a robust stationary squeezed state of a mechanical resonator in a quadratically coupled optomechanical system, driven by a pulsed laser. The intracavity photon number presents periodic intense peaks suddenly stiffening the effective harmonic potential felt by the mechanical resonator. These "optical spring kicks" tend to squeeze the resonator position, and due to the interplay with fluctuation-dissipation processes one can generate a stationary state with more than 10 dB of squeezing in a realistic scenario, even starting from moderately "precooled" initial thermal states.