1. State Key Lab of Power Systems
2. Department of Energy and Power Engineering
3. Tsinghua University
4. Beijing 100084
5. China
6. School of Electric Power
7. South China University of Technology
8. Guangzhou
9. State Key Laboratory of Quantum Optics and Quantum Optics Devices
10. Institute of Laser Spectroscopy
11. Shanxi University
12. Taiyuan 030006