1. Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu, People's Republic of China
2. The Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, People's Republic of China
3. University of Chinese Academy of Sciences, Beijing, People's Republic of China
4. School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
5. School of Mathematics and Statistics, Hexi University, Zhangye, People's Republic of China
6. Institute for Complex Systems and Mathematical Biology King's College, University of Aberdeen, Aberdeen, UK