• Photonics Research
  • Vol. 10, Issue 8, 1819 (2022)
Qiancheng Xu1、2, Kaiyu Cui1、2、*, Ning Wu1、2, Xue Feng1、2, Fang Liu1、2, Wei Zhang1、2、3, and Yidong Huang1、2、3
Author Affiliations
  • 1Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
  • 2Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
  • 3Beijing Academy of Quantum Information Sciences, Beijing, China
  • show less
    DOI: 10.1364/PRJ.447711 Cite this Article
    Qiancheng Xu, Kaiyu Cui, Ning Wu, Xue Feng, Fang Liu, Wei Zhang, Yidong Huang. Tunable mechanical-mode coupling based on nanobeam-double optomechanical cavities[J]. Photonics Research, 2022, 10(8): 1819 Copy Citation Text show less

    Abstract

    Tunable coupled mechanical resonators with nonequilibrium dynamic phenomena have attracted considerable attention in quantum simulations, quantum computations, and non-Hermitian systems. In this study, we propose tunable mechanical-mode coupling based on nanobeam-double optomechanical cavities. The excited optical mode interacts with both symmetric and antisymmetric mechanical supermodes and mediates coupling at a frequency of approximately 4.96 GHz. The mechanical-mode coupling is tuned through both optical spring and gain effects, and the reduced coupled frequency difference in non-Hermitian parameter space is observed. These results benefit research on the microscopic mechanical parity–time symmetry for topology and on-chip high-sensitivity sensors.

    1. INTRODUCTION

    Mechanical resonators exhibiting nanomechanical or micromechanical motion with long-lifetime vibrational phonon modes have been studied extensively for classical and quantum information processing. Multi-mechanical resonators are used in applications such as ultrasensitive sensing [1,2], macroscopic quantum entanglement [3,4], dual-mode squeezing [5,6], coherent Rabi oscillation [7], synchronization [8,9], and information processing [1012]. Therefore, some chip-based coupled mechanical resonators, including microdisk cavities [8,13], silicon nitride membranes [14], carbon nanotubes [7], graphene [15], and photonic crystals [12,13], have been reported to develop integrated hybrid quantum systems [1618].

    Qiancheng Xu, Kaiyu Cui, Ning Wu, Xue Feng, Fang Liu, Wei Zhang, Yidong Huang. Tunable mechanical-mode coupling based on nanobeam-double optomechanical cavities[J]. Photonics Research, 2022, 10(8): 1819
    Download Citation