1. Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low‐Dimensional Structural Physics and Devices, School of Physics and Electronics Hunan University Changsha 410082 P. R. China
2. Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China Chongqing University Chongqing 400044 P. R. China
3. Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 P. R. China