Practical Product Proofs for Lattice Commitments
Thomas Attema, Vadim Lyubashevsky, et al.
CRYPTO 2020
Electrically actuated optomechanical resonators provide a route to quantum-coherent, bidirectional conversion of microwave and optical photons. Such devices could enable optical interconnection of quantum computers based on qubits operating at microwave frequencies. Here we present a platform for microwave-to-optical conversion comprising a photonic crystal cavity made of single-crystal, piezoelectric gallium phosphide integrated on pre-fabricated niobium circuits on an intrinsic silicon substrate. The devices exploit spatially extended, sideband-resolved mechanical breathing modes at ~3.2 GHz, with vacuum optomechanical coupling rates of up to g0/2π ≈ 300 kHz. The mechanical modes are driven by integrated microwave electrodes via the inverse piezoelectric effect. We estimate that the system could achieve an electromechanical coupling rate to a superconducting transmon qubit of ~200 kHz. Our work represents a decisive step towards integration of piezoelectro-optomechanical interfaces with superconducting quantum processors.
Thomas Attema, Vadim Lyubashevsky, et al.
CRYPTO 2020
Daniil Frolov
IMS 2025
N. Daix, Lukas Czornomaz, et al.
S3S 2013
Herwig Hahn, Veeresh Deshpande, et al.
IEDM 2017