1. Beijing Academy of Quantum Information Sciences, 100193 Beijing, China
2. Beijing Key Laboratory of Quantum Devices, Key Laboratory for the Physics and Chemistry of Nanodevices, and School of Electronics, Peking University, Beijing 100871, China
3. Institute of Condensed Matter and Material Physics, School of Physics, Peking University, Beijing 100871, China
4. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China
5. Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
6. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China