1. Key Laboratory of Strongly coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
2. Physical Science and Technology College, Yichun University, Yichun 336000, P. R. China
3. Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China
4. CAS Center for Excellence in Superconducting Electronics (CENSE), Shanghai 200050, P. R. China
5. CAS Center for Excellence in Quantum Information and Quantum Physics, Hefei, Anhui 230026, P. R. China