1. School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
2. School of Mathematics and Physics and Information Engineering, Jiaxing University, Jiaxing 314001, China
3. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
4. Center for Applied Physics and Technology, Peking University, Beijing 100084, China
5. Macedonian Academy of Sciences and Arts, PO Box 428, 1000 Skopje, Macedonia