1. Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States
2. Photonics Initiative, Advanced Science Research Center, City University of New York, New York, New York, United States
3. Physics Program, Graduate Center, City University of New York, New York, New York, United States
4. John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, United States
5. National Institute for Materials Science, Tsukuba, Ibaraki, Japan