1 State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
2 Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
3 Institut National de la Recherche Scientifique, Centre Énergie Matériaux Télécommunications, Laboratory of Applied Computational Imaging, Varennes, Québec J3X1S2, Canada
4 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
5 Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
6 e-mail: yhyao@lps.ecnu.edu.cn
7 e-mail: sazhang@phy.ecnu.edu.cn