Chinese Journal of Quantum Electronics ›› 2021, Vol. 38 ›› Issue (4): 454-459.doi: 10.3969/j.issn.1007-5461.2021.04.007

• Quantum Optics • Previous Articles     Next Articles

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

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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