Cavity piezo-mechanics for superconducting-nanophotonic quantum interface

摘要: Hybrid quantum systems are essential for the realization of distributed networks. In particular, piezo-mechanics operating at typical superconducting qubit frequencies features low thermal excitations, and offers an appealing platform to bridge processors optical telecommunication channels. However, integrating optomechanical elements cryogenic temperatures with sufficiently strong interactions remains a tremendous challenge. Here, we report integrated cavity piezo-optomechanical where 10-GHz phonons resonantly coupled photons in nanophotonic cavities same time. Benefited from achieved large piezo-mechanical cooperativity ($C_\mathrm{em}\sim7$) enhanced coupling boosted by pulsed pump, demonstrate coherent via observation efficient microwave-optical photon conversion. This hybrid interface makes substantial step towards communication scale, as well novel explorations entanglement sensing mediated gigahertz phonons.