1. National Laboratory of Solid‐State Microstructures College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
2. Key Laboratory of Intelligent Optical Sensing and Manipulation Ministry of Education Nanjing University Nanjing 210093 China
3. Physical Measurement Laboratory National Institute of Standards and Technology Gaithersburg Maryland 20899 USA
4. Maryland NanoCenter University of Maryland College Park Maryland 20742 USA
5. School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China
6. Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China