arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2301.10554physics.opticsphysics.ins-det
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5mm长扭转模的光机反馈冷却

Optomechanical feedback cooling of a 5 mm-long torsional mode

Dianqiang Su, Yuan Jiang, Pablo Solano, Luis A. Orozco, John Lawall, Yanting Zhao

摘要:

我们报道了一个5 mm长,550 nm直径的光学晶体的基本扭转模的三个数量级的光学冷却。微透镜的旋转耦合到被引导的激光场的偏振。我们使用弱激光探针来监测旋转,并使用反馈来调制提供扭矩的辅助驱动激光的偏振。我们的研究结果提供了一个工具的大型扭转谐振器的光机械控制,具有广泛的应用和潜在的影响,研究宏观物体的量子态。

英文摘要:

We report three orders of magnitude optical cooling of the fundamental torsional mode of a 5 mm-long, 550 nm diameter optical nanofiber. The rotation of the nanofiber couples to the polarization of guided laser fields. We use a weak laser probe to monitor the rotation, and use feedback to modulate the polarization of an auxiliary drive laser providing torque. Our results present a tool for the optomechanical control of large-scale torsional resonators, with metrological applications and potential implications for studying macroscopic objects in quantum states.

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