Direct Implementation of High-Fidelity Three-Qubit Gates for Superconducting Processor with Tunable Couplers

  1. Hao-Tian Liu,
  2. Bing-Jie Chen,
  3. Jia-Chi Zhang,
  4. Yong-Xi Xiao,
  5. Tian-Ming Li,
  6. Kaixuan Huang,
  7. Ziting Wang,
  8. Hao Li,
  9. Kui Zhao,
  10. Yueshan Xu,
  11. Cheng-Lin Deng,
  12. Gui-Han Liang,
  13. Zheng-He Liu,
  14. Si-Yun Zhou,
  15. Cai-Ping Fang,
  16. Xiaohui Song,
  17. Zhongcheng Xiang,
  18. Dongning Zheng,
  19. Yun-Hao Shi,
  20. Kai Xu,
  21. and Heng Fan
Three-qubit gates can be constructed using combinations of single-qubit and two-qubit gates, making their independent realization unnecessary. However, direct implementation of three-qubit