1. Center for Biosystems Dynamics Research, RIKEN, Suita, Osaka 565-0871, Japan
2. Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
3. Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
4. Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
5. Department of Chemistry, School of Science, The University of Tokyo, Tokyo 113-0033, Japan
6. Department of Chemistry, Kyushu University, Fukuoka 819-0395, Japan