1. Center for Emergent Matter Science, RIKEN, Wako, Saitama 351-0198, Japan.
2. Department of Applied Physics, Tokyo University of Science, Shinjuku-ku, Tokyo 162-8601, Japan.
3. Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
4. Birck Nanotechnology Center, Purdue University,, West Lafayette, IN 47907, USA.
5. Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA.
6. School of Materials Engineering, Purdue University, West Lafayette, IN 47907, USA.
7. Elmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, USA.
8. RIKEN Center for Quantum Computing, RIKEN, Wako, Saitama 351-0198, Japan.