Real-space characterization of cavity-coupled waveguide systems in hypersonic phononic crystals
arXiv:1909.04827 · doi:10.1103/PhysRevApplied.13.024005
Abstract
A phononic crystal formed in a suspended membrane provides full confinement of hypersonic waves and thus realizes a range of chip-scale manipulations. In this letter, we demonstrate the mode-resolved real-space characterization of the mechanical vibration properties in cavities and waveguide systems. Multiple resonant modes are independently characterized in various designed cavities, and wavelength-scale high- resonances up to 4200 under atmospheric conditions are confirmed. This also reveals that the waveguide allows us to resolve single-mode wave transmission and thereby drive evanescently-coupled cavities. The methods offer a significant tool with which to build compact and low-power microwave phononic circuitry for signal processing and hybrid quantum system applications.
arXiv comment17 pages, 6 figures
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Cited by in corpus (5)
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- Evanescently coupled topological ring-waveguide systems for chip-scale ultrahigh frequency phononic circuits
- Phononic-crystal cavity magnomechanics
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