1. School of Materials Science and Engineering Peking University Beijing 100871 P. R. China
2. Siyuan Laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials Department of Physics Jinan University Guangzhou 510632 P. R. China
3. International Center for Quantum Materials School of Physics Peking University Beijing 100871 P. R. China
4. State Key Laboratory of Low‐Dimensional Quantum Physics Department of Physics Tsinghua University Beijing 100084 P. R. China
5. Collaborative Innovation Center of Quantum Matter Beijing 100871 P. R. China
6. CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing 100190 P. R. China
7. Beijing Academy of Quantum Information Sciences Beijing 100193 P. R. China