Improving the Stochastic Feedback Cooling of a Mechanical Oscillator Using a Degenerate Parametric Amplifier

被引：2

作者：

Ye, Xiaoqian ^{[1
]}

Huang, Sumei ^{[2
]}

Deng, Li ^{[1
]}

Chen, Aixi ^{[2
]}

机构：

[1] Zhejiang Sci Tech Univ, Sch Sci, Hangzhou 310018, Peoples R China

[2] Zhejiang Sci Tech Univ, Dept Phys, Key Lab Opt Field Manipulat Zhejiang Prov, Hangzhou 310018, Peoples R China

来源：

PHOTONICS | 2022年 / 9卷 / 04期

基金：

中国国家自然科学基金;

关键词：

optomechanical system; stochastic feedback cooling scheme; degenerate optical parametric amplifier; cooling of a movable mirror; RADIATION-PRESSURE; MOVING MIRROR; QUANTUM; CAVITY; DECOHERENCE; MOTION;

D O I：

10.3390/photonics9040264

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Cooling of a macroscopic mechanical resonator to extremely low temperatures is a necessary condition to observe a variety of macroscopic quantum phenomena. Here, we study the stochastic feedback cooling of a mechanical resonator in an optomechanical system with a degenerate optical parametric amplifier (OPA). In the bad-cavity limit, we find that the OPA can enhance the cooling of the movable mirror in the stochastic feedback cooling scheme. The movable mirror can be cooled from 132 mK to 0.033 mK, which is lower than that without the OPA by a factor of about 5.

引用

页数：13

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