1. Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, China
2. Department of Information Science and Engineering, Hunan University of Humanities, Science and Technology, Loudi, China
3. College of Information Science and Engineering, Hunan Normal University, Changsha, China
4. College of Computer and Communication, Hunan University of Technology, Zhuzhou, China