反馈压缩冷却光力学振子突破精度极限  

Squeezed cooling optomechanical resonator to surpass the precision limit

作　　者：尹璋琦 YIN ZhangQi(Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements(MOE),and Center for Quantum Technology Research,School of Physics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学物理学院,量子技术研究中心,先进光电量子结构设计与测量教育部重点实验室,北京100081

出　　处：《中国科学：物理学、力学、天文学》2024年第2期146-148,共3页Scientia Sinica Physica,Mechanica & Astronomica

摘　　要：近年来光力学反馈冷却技术对于提升光力学的测量精度以及实现宏观量子叠加均发挥了重要的推动作用.但是传统测量反馈冷却技术受限于测量噪声.最近的研究结合并同时优化了矢量探测反馈冷却与参量压缩技术,不仅突破了传统反馈冷却技术的极限,也突破了参量压缩的3 d B极限,实现了超过30 d B的热噪声抑制.In recent years,optomechanical feedback cooling technology has played an important role in both the optomechanical measurement and realizing macroscopic quantum superpositions.But conventional feedback cooling techniques are limited by measurement noise.Recent research has combined and optimized the vector detection feedback cooling and the parametric squeezing at the same time.It not only breaks through the precision limit of the traditional feedback cooling technology,but also breaks through the 3 dB limit of the parametric squeezing.The mechanical thermal noise has been suppressed by more than 30 dB.

关 键 词：光力学 压缩态 反馈冷却 

分 类 号：O431.2[机械工程—光学工程]