Tunable coupling of a quantum phononic resonator to a transmon qubit with flip-chip architecture

Abstract

A hybrid system with tunable coupling between phonons and qubits shows great potential for advancing quantum information processing. In this work, we demonstrate strong and tunable coupling between a surface acoustic wave (SAW) resonator and a transmon qubit based on galvanic-contact flip-chip technique. The coupling strength varies from $2\pi \times$7.0 MHz to -$2\pi \times$20.6 MHz, which is extracted from different vacuum Rabi oscillation frequencies. The phonon-induced ac Stark shift of the qubit at different coupling strengths is also shown. Our approach offers a good experimental platform for exploring quantum acoustics and hybrid systems.

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Cited by in corpus (3)

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• Hybrid quantum surface acoustic wave with skyrmion qubit for quantum information processing
• Quantum Acoustics with Superconducting Qubits in the Multimode Transition-Coupling Regime