1. Research Center for Integrated Quantum Electronics, Hokkaido University 1 , North 13 West 8, Sapporo 060-0813, Japan
2. Graduate School of Science and Engineering, Ehime University 2 , 3 Bunkyo cho, Matsuyama 790-8577, Japan
3. Toray Research Center 3 , 3-2-11 Sonoyama, Otsu, Shiga 520-8567, Japan
4. Systems Design Lab (d.lab), School of Engineering, The University of Tokyo 4 , 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
5. Faculty of Information Science and Technology, Hokkaido University 5 , North 14 West 9, Sapporo 060-0814, Japan
6. Department of Physics, Chemistry and Biology, Linköping University 6 , Linköping SE-58183, Sweden