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    李崇

    • 副教授     博士生导师   硕士生导师
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:物理学院
    • 学科:理论物理
    • 办公地点:物理219室
    • 联系方式:lichong@dlut.edu.cn
    • 电子邮箱:lichong@dlut.edu.cn

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    Enhancing optomechanical force sensing via precooling and quantum noise cancellation

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    论文类型:期刊论文

    第一作者:Gebremariam, Tesfay

    通讯作者:Li, C (reprint author), Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China.

    合写作者:Zeng, Ye-Xiong,Mazaheri, Mojtaba,Li, Chong

    发表时间:2020-01-01

    发表刊物:SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY

    收录刊物:EI、SCIE

    卷号:63

    期号:1

    ISSN号:1674-7348

    关键字:hybrid optomechanical system; coherent quantum noise cancellation; force sensing

    摘要:We theoretically investigate optomechanical force sensing via precooling and quantum noise cancellation in two coupled cavity optomechanical systems. We show that force sensing based on the reduction of noise can be used to dramatically enhance the force sensing and that the precooling process can effectively improve the quantum noise cancellation. Specifically, we examine the effect of optomechanical cooling and noise reduction on the spectral density of the noise of the force measurement; these processes can significantly enhance the performance of optomechanical force sensing, and setting up the system in the resolved sideband regime can lead to an optimization of the cooling processes in a hybrid system. Such a scheme serves as a promising platform for quantum back-action-evading measurements of the motion and a framework for an optomechanical force sensor.