1. Opto-Electric Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, 150001 Harbin, China
2. State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
3. Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 23026, China