1. Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China
2. Massachusetts Institute of Technology, Department of Physics, Cambridge, Massachusetts 02139, USA
3. School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
4. Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai 200240, China
5. University of California at Berkeley, Department of Chemistry, Berkeley, California 94720, USA
6. Beijing Academy of Quantum Information Sciences, Beijing 100913, China
7. Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
8. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, Cambridge, Massachusetts 02139, USA
9. SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
10. Department of Applied Physics, Stanford University, Stanford, California 94305, USA
11. Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
12. Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
13. Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA
14. International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China