1. Max Planck Institute for Solid State Research; Heisenbergstr. 1 Stuttgart 70569 Germany
2. Key Laboratory of Materials for Energy Conversion; Chinese Academy of Sciences; Department of Materials Science and Engineering; University of Science and Technology of China; Hefei Anhui 230026 China
3. Hefei National Laboratory of Physical Sciences at the Microscale and CAS Center for Excellence in Nanoscience; University of Science and Technology of China; Hefei Anhui 230026 China
4. Synergetic Innovation of Quantum Information & Quantum Technology; University of Science and Technology of China; Hefei Anhui 230026 China