量子电子学报 ›› 2021, Vol. 38 ›› Issue (4): 454-459.doi: 10.3969/j.issn.1007-5461.2021.04.007

• 量子光学 • 上一篇    下一篇

两模机械系统中振动模式参量耦合强度调控的实验研究

袁 泉1,2, 龚志成 1, 毛添华1, 谌成渝1,2, 付 号1,3∗   

  1. ( 1 中国科学院精密测量科学与技术创新研究院波谱与原子分子物理国家重点实验室, 湖北 武汉 430071; 2 中国科学院大学, 北京 100049; 3 中国工程物理研究院研究生院, 北京 100193 )
  • 收稿日期:2020-07-13 修回日期:2020-09-04 出版日期:2021-07-28 发布日期:2021-07-27
  • 通讯作者: E-mail: h.fu@apm.ac.cn
  • 基金资助:
    Supported by National Key Research and Development Program of China (国家重点研发计划, 2017YFA0304500), National Natural Science Foundation of China (国家自然科学基金重点项目和重大研究计划, 91636220)

Experimental investigation of parametric coupling strength control of two vibration modes in a two-mode mechanical system

YUAN Quan1,2, GONG Zhicheng1, MAO Tianhua1, SHEN Chengyu1,2, FU Hao1,3∗   

  1. ( 1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China; 3 Graduate School of China Academy of Engineering Physics, Beijing 100193, China )
  • Received:2020-07-13 Revised:2020-09-04 Published:2021-07-28 Online:2021-07-27

摘要: 在基于两根耦合悬臂梁的机械系统中开展了振动模式参量耦合实验, 研究了模式频率差对模式耦合强 度的影响。实验中利用激光囚禁其中一根悬臂梁, 构造了一个可调谐两模机械系统, 并通过对囚禁光功率的周 期性调制施加参量驱动, 实现了振动模式间的参量耦合; 进一步研究了不同模式频率差下的模式参量耦合, 在实 验上得到了模式间频率差与模式耦合强度之间的关系。该研究将有助于实现机械系统中不同模式频率差下模 式耦合强度的精确调控。

关键词: 量子光学, 相干操控, 机械振子, 参量驱动, 耦合强度

Abstract: Experimental investigation of parametric coupling of two vibration modes in a two-coupled- cantilever-based mechanical system is carried out, and the influence of mode frequency difference on coupling strength is investigated. In the experiment, a tunable two-mode system is constructed by trapping one of the cantilevers optically, and the parametric coupling between the two modes is realized by applyinga parametric drive through periodically modulating the trapping power. Furthermore, the parametric coupling under distinct frequency differences between two modes is studied and the relationship between coupling strength and frequency difference is obtained experimentally. The result is beneficial to realizing the accuracy control of the coupling strength of two modes under distinct frequency differences.

Key words: quantum optics, coherent control, mechanical oscillator, parametric drive, coupling strength

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