中国物理B ›› 2026, Vol. 35 ›› Issue (2): 24302-024302.doi: 10.1088/1674-1056/ae0895

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Design and analysis of a flip-chip architecture for SAW-DQD strong coupling

Yi-Bo Wang(王奕博)1,2,3,4, Xiang-Xiang Song(宋骧骧)1,2,3,4, Zhuo-Zhi Zhang(张拙之)1,2,3,4,†, and Guo-Ping Guo(郭国平)1,2,3,4,5   

  1. 1 Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China;
    2 Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, China;
    3 CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China;
    4 Anhui Province Key Laboratory of Quantum Network, University of Science and Technology of China, Hefei 230026, China;
    5 Origin Quantum Computing Company Limited, Hefei 230088, China
  • 收稿日期:2025-07-14 修回日期:2025-09-17 接受日期:2025-09-18 发布日期:2026-02-05
  • 通讯作者: Zhuo-Zhi Zhang E-mail:zzzhang@ustc.edu.cn
  • 基金资助:
    This project was supported by the National Natural Science Foundation of China (Grant Nos. 12274401, 12274397, and 12034018), the National Key Research and Development Program of China (Grant No. 2022YFA1405900), and the Natural Science Foundation of Jiangsu Province (Grant No. BK20240123).

Design and analysis of a flip-chip architecture for SAW-DQD strong coupling

Yi-Bo Wang(王奕博)1,2,3,4, Xiang-Xiang Song(宋骧骧)1,2,3,4, Zhuo-Zhi Zhang(张拙之)1,2,3,4,†, and Guo-Ping Guo(郭国平)1,2,3,4,5   

  1. 1 Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China;
    2 Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, China;
    3 CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China;
    4 Anhui Province Key Laboratory of Quantum Network, University of Science and Technology of China, Hefei 230026, China;
    5 Origin Quantum Computing Company Limited, Hefei 230088, China
  • Received:2025-07-14 Revised:2025-09-17 Accepted:2025-09-18 Published:2026-02-05
  • Supported by:
    This project was supported by the National Natural Science Foundation of China (Grant Nos. 12274401, 12274397, and 12034018), the National Key Research and Development Program of China (Grant No. 2022YFA1405900), and the Natural Science Foundation of Jiangsu Province (Grant No. BK20240123).

摘要: Surface acoustic wave (SAW) resonators offer distinct advantages for coupling to semiconductor qubits, including low loss, high stability, and compatibility with magnetic fields. However, the integration of SAW resonators with double quantum dots (DQDs) that host charge and spin qubits remains largely unexplored. In this work, we propose a flip-chip architecture that enables three-dimensional integration of a semiconductor DQD with a SAW resonator. Taking experimental feasibility into account, we estimate the coupling strength between a DQD and a SAW resonator. The results suggest that the strong coupling regime can be reached in our design. This study provides theoretical insight and practical guidance for experimental exploration of phonon-electron coupling in hybrid SAW-DQD quantum systems.

关键词: surface acoustic wave resonator, double quantum dot, 3D integration, strong coupling

Abstract: Surface acoustic wave (SAW) resonators offer distinct advantages for coupling to semiconductor qubits, including low loss, high stability, and compatibility with magnetic fields. However, the integration of SAW resonators with double quantum dots (DQDs) that host charge and spin qubits remains largely unexplored. In this work, we propose a flip-chip architecture that enables three-dimensional integration of a semiconductor DQD with a SAW resonator. Taking experimental feasibility into account, we estimate the coupling strength between a DQD and a SAW resonator. The results suggest that the strong coupling regime can be reached in our design. This study provides theoretical insight and practical guidance for experimental exploration of phonon-electron coupling in hybrid SAW-DQD quantum systems.

Key words: surface acoustic wave resonator, double quantum dot, 3D integration, strong coupling

中图分类号:  (Surface waves in solids and liquids)

  • 43.35.Pt
43.58.Kr (Spectrum and frequency analyzers and filters; acoustical and electrical oscillographs; photoacoustic spectrometers; acoustical delay lines and resonators) 68.65.Hb (Quantum dots (patterned in quantum wells)) 03.67.Lx (Quantum computation architectures and implementations)