1. Interdisciplinary Materials Research Center School of Materials Science and Engineering Tongji University Shanghai 201804 P. R. China
2. State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences 500 Yu Tian Road Shanghai 200083 China
3. State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences P.O. Box 912 Beijing 100083 China
4. Translational Research Institute of Brain and Brain‐Like Intelligence Shanghai Fourth People's Hospital Affiliated to Tongji University Tongji University Shanghai 200434 P. R. China