1. Department of Physics Applied Optics Beijing Area Major Laboratory Beijing Normal University Beijing 100875 China
2. National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures College of Engineering and Applied Sciences and School of Physics Nanjing University Nanjing 210093 China
3. Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements (MOE) School of Physics Beijing Institute of Technology Beijing 100081 China