1. Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
2. School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
3. Chengdu Answer Information Technology Co., Ltd., Chengdu 610041, China
4. School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China