1. State Key Laboratory of Integrated Chip and System, Frontier Institute of Chip and System, Fudan University 1 , Shanghai 200433, China
2. State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics & Systems, School of Microelectronics, Fudan University 2 , Shanghai 200433, China
3. State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences 3 , 500 Yu Tian Road, Shanghai 200083, China
4. Department of Applied Physics, The Hong Kong Polytechnic University Hung Hom 4 , Kowloon, Hong Kong, China