1. State Key Laboratory of Artificial Microstructure and Mesoscopic Physics, Nano-optoelectronics Frontier Center of Ministry of Education, School of Physics, Peking University, Beijing 100871, China
2. Peking University Yangtze Delta Institute of Optoelectronics, Nantong, Jiangsu 226010, China
3. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
4. Collaborative Innovation Center of Quantum Matter, Beijing 100871, China