1. Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
2. MIZUSAQI Inc., 1-48-3 Hanasaki-cho, Naka-ku, Yokohama, Kanagawa 231-0063, Japan
3. Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro-ku, Tokyo 152-8550, Japan