1. State Key Laboratory of Nuclear Physics and Technology, School of Physics, CAPT, HEDPS, and IFSA Collaborative Innovation Center of MoE College of Engineering, Peking University, Beijing 100871, People's Republic of China
2. Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544, USA
3. Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100871, People's Republic of China