1. Department of Physics, The Hong Kong University of Science and Technology, Clear Water
Bay, Kowloon, Hong Kong, 999077, China
2. State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education), and Department of Physics, Fudan University, Yangpu District, Shanghai, 200433, China
3. Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Yangpu District, Shanghai, 200438, China
4. Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Gulou District, Nanjing, 210093, China