1. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
2. College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3. The Center for Advanced Quantum Studies and Department of Physics, Beijing Normal University, Beijing 100875, People’s Republic of China
4. Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China