1. State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures (MOE), and Department of Physics, Fudan University, Shanghai 200433, China
2. Department of Physics, University of Washington, Seattle, Washington 98195, United States
3. School of Physical Science and Technology, and ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai 201210, China
4. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
5. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
6. Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
7. Shanghai Qi Zhi Institute, Shanghai 200232, China
8. Institute for Nanoelectronic Devices and Quantum Computing, and Zhangjiang Fudan International Innovation Center, Fudan University, Shanghai 200433, China
9. Shanghai Research Center for Quantum Sciences, Shanghai 201315, China