1. Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics , Beijing Institute of Technology , Beijing 100081 , China
2. Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering , Beijing Institute of Technology , Beijing 100081 , China
3. Beijing National Laboratory for Condensed Matter Physics , Institute of Physics, Chinese Academy of Sciences , Beijing 100190 , China