High-Coherence Quantum Acoustics with Planar Superconducting Qubits

TL;DR

This paper demonstrates high-coherence quantum acoustics using planar superconducting qubits integrated with high-overtone bulk acoustic resonators, enabling advanced quantum control of mechanical vibrations.

Contribution

It introduces a novel integration of high-coherence HBARs with planar superconducting qubits, achieving high cooperativity and weak coupling regimes.

Findings

Achieved high-coherence quantum acoustics with integrated devices

Demonstrated acoustically-induced transparency regime

Enabled potential for new quantum acoustic applications

Abstract

Quantum acoustics is an emerging platform for hybrid quantum technologies enabling quantum coherent control of mechanical vibrations. High-overtone bulk acoustic resonators (HBARs) represent an attractive mechanical implementation of quantum acoustics due to their potential for exceptionally high mechanical coherence. Here, we demonstrate an implementation of high-coherence HBAR quantum acoustics integrated with a planar superconducting qubit architecture, demonstrating an acoustically-induced-transparency regime of high cooperativity and weak coupling, analogous to the electrically-induced transparency in atomic physics. Demonstrating high-coherence quantum acoustics with planar superconducting devices enables new applications for acoustic resonators in quantum technologies.