1. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
2. Department of Mathematics, Wuhan University of Technology, Wuhan 430070, China
3. International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
4. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
5. College of Science, Donghua University, Shanghai 201620, China
6. Department of Physics, Wuhan University of Technology, Wuhan 430070, China