1. Department of Physics
2. National Taiwan University
3. Taipei 106, Taiwan
4. Nanoscience and Technology Program
5. Taiwan International Graduate Program
6. Institute of Atomic and Molecular Sciences Academia Sinica
7. Taipei 10617, Taiwan
8. Academia Sinica
9. Taipei 115, Taiwan
10. Research Center of Applied Science
11. Institute of Physics
12. Department of Photonics
13. National Chiao Tung University