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

• DOI: 10.48550/arxiv.2404.18540
• Publication Date: 2024-04-29
• Authors: Xinhui Ruan; Li Li; Gui-Han Liang; Silu Zhao; Jia-heng Wang; Yi-Zhou Bu; Bingjie Chen; Xiaohui Song; Xiang Li; He Zhang; Jinzhe Wang; Qianchuan Zhao; Kai Xu; Heng Fan; Yu-xi Liu; Jing Zhang; Zhihui Peng; Zhongcheng Xiang; Dongning Zheng
• Keywords: Transmon

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