1. Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan
2. Graduate School of Engineering, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8538, Japan
3. KYOKUGEN (Center for Quantum Science and Technology under Extreme Conditions), Osaka University, Toyonaka, Osaka 560-8531, Japan
4. Department of Physics, Faculty of Science, Niigata University, Niigata 950-2181, Japan