1. Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
2. School of the Gifts Yong, University of Science and Technology of China, Hefei, Anhui 230026, China
3. The Centre of Physical Experiments, University of Science and Technology of China, Hefei, Anhui 230026, China
4. Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China