Kotaro Kajikawa is a Professor in the Department of Electrical and Electronic Engineering at the Tokyo Institute of Technology. He obtained his Bachelor’s, Master’s, and Doctorate degrees from Tokyo Tech. Professor Kajikawa is a member of The Japanese Society of Applied Physics and serves on the editorial board of Scientific Reports. Junichi Takahara is a Professor of the Graduate School of Engineering at Osaka University, Japan. He gained his Bachelor’s, Master’s, and PhD all from Osaka University.