Quantum acousto-optic transducer for superconducting qubits

TL;DR

This paper introduces a theoretical design for a quantum transducer that enables reversible conversion between superconducting qubits and optical photons using acoustic waves, leveraging integrated acousto-optic resonators and piezoelectric effects.

Contribution

It presents a novel theoretical model for a quantum transducer that combines acousto-optic and piezoelectric effects for efficient phonon-photon conversion.

Findings

Phonon-photon coupling rate evaluated.

Optical pump power requirements feasible with current technology.

Device parameters support full quantum conversion.

Abstract

We propose theory for reversible quantum transducer connecting superconducting qubits and optical photons using acoustic waves in piezoelectrics. The proposed device consists of integrated acousto-optic resonator that utilizes stimulated Brillouin scattering for phonon-photon conversion, and piezoelectric effect for coupling of phonons to qubits. We evaluate the phonon-photon coupling rate, and show that the required power of optical pump as well as the other device parameters providing full and faithful quantum conversion are feasible for implementation with the state of the art integrated acousto-optics.