1. College of Science, National University of Defense Technology, Changsha 410073, China
2. School of Computer Science, National University of Defense Technology, Changsha 410073, China
3. School of Mathematics and Physics, Queen's University of Belfast, Belfast BT7 1NN, United Kingdom
4. Institute of Physics of the ASCR, ELI-Beamlines Project, Na Slovance 2, 18221 Prague, Czech Republic