Dissipative optomechanics in high-frequency nanomechanical resonators

André G. Primo, Pedro V. Pinho, Rodrigo Benevides, Simon Gröblacher, Gustavo S. Wiederhecker and Thiago P. Mayer Alegre ()
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André G. Primo: University of Campinas
Pedro V. Pinho: University of Campinas
Rodrigo Benevides: ETH Zürich
Simon Gröblacher: Delft University of Technology
Gustavo S. Wiederhecker: University of Campinas
Thiago P. Mayer Alegre: University of Campinas

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract The coherent transduction of information between microwave and optical domains is a fundamental building block for future quantum networks. A promising way to bridge these widely different frequencies is using high-frequency nanomechanical resonators interacting with low-loss optical modes. State-of-the-art optomechanical devices rely on purely dispersive interactions that are enhanced by a large photon population in the cavity. Additionally, one could use dissipative optomechanics, where photons can be scattered directly from a waveguide into a resonator hence increasing the degree of control of the acousto-optic interplay. Hitherto, such dissipative optomechanical interaction was only demonstrated at low mechanical frequencies, precluding prominent applications such as the quantum state transfer between photonic and phononic domains. Here, we show the first dissipative optomechanical system operating in the sideband-resolved regime, where the mechanical frequency is larger than the optical linewidth. Exploring this unprecedented regime, we demonstrate the impact of dissipative optomechanical coupling in reshaping both mechanical and optical spectra. Our figures represent a two-order-of-magnitude leap in the mechanical frequency and a tenfold increase in the dissipative optomechanical coupling rate compared to previous works. Further advances could enable the individual addressing of mechanical modes and help mitigate optical nonlinearities and absorption in optomechanical devices.

Date: 2023
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DOI: 10.1038/s41467-023-41127-7

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