1. Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan
2. Graduate School of Photonics Science, Chitose Institute of Science and Technology, Chitose 066-0012, Japan
3. Graduate School of Arts and Sciences, International Christian University, Tokyo 181-8585, Japan
4. Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
5. JST ERATO Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan