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

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 techn...

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Bibliographic Details
Published in:arXiv.org 2024-04
Main Authors: Ruan, Xinhui, Li, Li, Guihan Liang, Zhao, Silu, Jia-heng, Wang, Bu, Yizhou, Chen, Bingjie, Song, Xiaohui, Li, Xiang, Zhang, He, Wang, Jinzhe, Zhao, Qianchuan, Xu, Kai, Fan, Heng, Yu-xi, Liu, Zhang, Jing, Peng, Zhihui, Xiang, Zhongcheng, Zheng, Dongning
Format: Article
Language:English
Subjects:
Acoustics
Coupling
Data processing
Hybrid systems
Phonons
Quantum phenomena
Qubits (quantum computing)
Resonators
Surface acoustic waves
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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. 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.
ISSN:2331-8422