1. State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences & Center of Materials Science and Optoelectronics University of Chinese Academy of Sciences Beijing 100083 China
2. Hunan Key Laboratory of Super‐microstructure and Ultrafast Process School of Physics and Electronics Central South University Changsha 410083 China
3. State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China
4. State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University No.92 Weijin Road Tianjin 300072 China
5. Beijing Academy of Quantum Information Sciences Beijing 100193 China