attometer级反射镜位置的光学相空间重构
Optical phase-space reconstruction of mirror position at the attometer level
摘要：
我们描述了一个实验，其中的谐波约束镜的位置的求积观察在attometer水平。本文研究了在辐射压力作用下，反射镜在自由区和冷阻尼区的布朗运动。我们还研究了外力参数调制时的热噪声压缩。在低增益下，我们观察到了50%的理论压缩极限，在大增益下，我们观察到了镜的参量振荡。
英文摘要：
We describe an experiment in which the quadratures of the position of an harmonically-bound mirror are observed at the attometer level. We have studied the Brownian motion of the mirror, both in the free regime and in the cold-damped regime when an external viscous force is applied by radiation pressure. We have also studied the thermal-noise squeezing when the external force is parametrically modulated. We have observed both the 50% theoretical limit of squeezing at low gain and the parametric oscillation of the mirror for a large gain.
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