1. State Key Laboratory of Mesoscopic Physics and Department of Physics
2. Peking University
3. Beijing 100871
4. P. R. China
5. State Key Laboratory of Information Photonics and Optical Communications & School of Science
6. School of Physics and Telecommunication Engineering
7. Shaanxi University of Technology
8. Hanzhong 723001
9. Collaborative Innovation Center of Quantum Matter
10. Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education