Piezoelectric transduction of a wavelength-scale mechanical waveguide

Abstract

We present a piezoelectric transducer in thin-film lithium niobate that converts a 1.7 GHz microwave signal to a mechanical wave in a single mode of a 1 micron-wide waveguide. We measure a -12 dB conversion efficiency that is limited by material loss. The design method we employ is widely applicable to the transduction of wavelength-scale structures used in emerging phononic circuits like those at the heart of many optomechanical microwave-to-optical quantum converters.

arXiv comment9 pages, 7 figures. First two authors contributed equally to this work

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• Gigahertz phononic integrated circuits on thin-film lithium niobate on sapphire
• Piezoelectric actuation for integrated photonics
• Optomechanical ring resonator for efficient microwave-optical frequency conversion
• Gallium nitride phononic integrated circuits for future RF front-ends
• On-chip generation and dynamic piezo-optomechanical rotation of single photons
• High-acoustic-index-contrast phononic circuits: numerical modeling
• Optomechanical generation of coherent GHz vibrations in a phononic waveguide
• Topological Edge Mode Tapering
• Slow propagation of 2 GHz acoustical waves in a suspended GaAs on insulator phononic waveguide
• Silicon-lattice-matched boron-doped gallium phosphide: A scalable acousto-optic platform
• Buckling-induced quadratic nonlinearity in silicon phonon waveguide structures
• Approaching optimal microwave-acoustic transduction on lithium niobate using SQUID arrays
• Impact of the Central Frequency of Environment on Non-Markovian Dynamics in Piezoelectric Optomechanical Devices