1. Beijing National Laboratory for Molecular Sciences; CAS Research/Education Center for Excellence in Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
2. Beijing National Laboratory for Condensed Matter Physics; Institute of Physics; Chinese Academy of Sciences; Beijing 100190 P. R. China
3. Institute for Quantum Science and Engineering; Department of Physics; Southern University of Science and Technology; Shenzhen 518055 P. R. China
4. School of Chemical Sciences; University of Chinese Academy of Sciences; Beijing 100049 P. R. China