1. Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People’s Republic of China
2. Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, People’s Republic of China
3. Tsung-Dao Lee Institute, Shanghai 200240, People’s Republic of China