Hoenl, SimonPopoffo, YouriCaimi, DanieleBeccari, AlbertoKippenberg, Tobias J.Seidler, Paul2023-03-272023-03-272023-03-272022-01-01https://infoscience.epfl.ch/handle/20.500.14299/196481WOS:000925380500425Optomechanical resonators provide a route to interconversion of microwave and optical photons for quantum interconnects. We present a platform comprising a GaP photonic crystal cavity integrated on prefabricated niobium circuits, with mechanical modes at similar to 3.2 GHz and optomechanical coupling rates up to g0/2 pi similar or equal to 300 kHz. (C) 2022. The Author(s)OpticsTelecommunicationstext::conference output::conference proceedings::conference paper