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Journal Article
Optomechanical crystal with bound states in the continuum
2022
Overview
Chipscale micro- and nano-optomechanical systems, hinging on the intangible radiation-pressure force, have shown their unique strength in sensing, signal transduction, and exploration of quantum physics with mechanical resonators. Optomechanical crystals, as one of the leading device platforms, enable simultaneous molding of the band structure of optical photons and microwave phonons with strong optomechanical coupling. Here, we demonstrate a new breed of optomechanical crystals in two-dimensional slab-on-substrate structures empowered by mechanical bound states in the continuum (BICs) at 8 GHz. We show symmetry-induced BIC emergence with optomechanical couplings up to
g
/2
π
≈ 2.5 MHz per unit cell, on par with low-dimensional optomechanical crystals. Our work paves the way towards exploration of photon-phonon interaction beyond suspended microcavities, which might lead to new applications of optomechanics from phonon sensing to quantum transduction.
Unsuspended optomechanical systems might enable unique applications for quantum sensing and transduction. Here, the authors demonstrate a two-dimensional slab-on-substrate optomechanical crystal empowered by mechanical bound states in the continuum.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
