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

• URL: http://arxiv.org/abs/2404.18540v1
• Date: Mon, 29 Apr 2024 09:28:45 GMT
• Title: Tunable coupling of a quantum phononic resonator to a transmon qubit with flip-chip architecture
• Authors: Xinhui Ruan, Li Li, Guihan Liang, Silu Zhao, Jia-heng Wang, Yizhou 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,
• Abstract summary: 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.
• Score: 27.214977464945797
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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