After graduation from Kyoto university (Degree of Science) in 1989, I had worked at Low temperature laboratory (Helsinki University of Technology in Finland), Experimental Physik V (Bayreuth University in Germany), and Joint Research Center for Atom Technology - Angstrom Technology Partnership (dissolved in 2002/3), c/o National Institute for Advanced Interdisciplinary Research in Japan). I have been working at the department of physics, Kindai (Kinki University, but I am not kinky!) since April 2000.