1. Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
2. Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
3. State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
4. Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China
5. Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
6. Wuhan Institute of Quantum Technology, Wuhan 430206, China