1. Department of Material Science and Technology of China, University of Science and Technology of China, Hefei, Anhui 230026, China
2. Hefei National Laboratory for Physical Sciences at the Microscale, Synergetic Innovation Centre of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
3. National Demonstration Center for Experimental Chemistry Education, University of Science and Technology of China, Hefei, Anhui 230026, China
4. Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China