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Hexagonal boron nitride (hBN) is a 2D material with excellent mechanical properties hosting quantum emitters and optically active spin defects, several of them being sensitive to strain. Establishing optomechanical control of hBN will enable hybrid quantum devices that combine the spin degree of freedom with the cavity optomechanical toolbox. In this letter, we report the first observation of radiation pressure backaction at telecom wavelengths with a hBN drumhead mechanical resonator. The thermomechanical motion of the resonator is coupled to the optical mode of a high finesse fiber-based Fabry-Pérot microcavity in a membrane-in-the-middle configuration. We are able to resolve the optical spring effect and optomechanical damping with a single photon coupling strength of g0 = 710 Hz. Our results pave the way for tailoring the mechanical properties of hBN resonators with light.

Rights:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

Keyword: Hexagonal boron nitride, optomechanical control, quantum devices

Date published: 2023-07-26

Publisher: American Chemical Society (ACS)

Journal:

• Nano Letters (ISSN: 15306984) vol. 23 issue. 14 p. 6301-6307

Funding:

• H2020 Marie Sklodowska-Curie Actions 722923
• Bayerisches Staatsministerium f?r Wissenschaft und Kunst
• Japan Society for the Promotion of Science 19H05790
• Japan Society for the Promotion of Science 20H00354
• Japan Society for the Promotion of Science 21H05233

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1021/acs.nanolett.3c00544

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Updated at: 2025-02-14 16:30:54 +0900

Published on MDR: 2025-02-14 16:30:54 +0900