1. Department of Physics, School of Science and Engineering;
2. Advanced Research Institute for Science and Engineering;
3. Materials Research Laboratory for Bioscience and Photonics, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan.
4. Core Research for Evolutional Science and Technology (CREST), “Genetic Programming” Team 13, Nogawa 907, Miyamae-ku, Kawasaki 216-0001, Japan.