1. Thin‐Film Device Laboratory and Center for Emergent Matter Science RIKEN 2‐1 Hirosawa Wako Saitama 351‐0198 Japan
2. Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics University of Macau Macau SAR 999078 China
3. Department of Modern Mechanical Engineering Waseda University 3‐4‐1 Okubo, Shinjuku‐ku Tokyo 169‐8555 Japan
4. Electrical and Electronic Engineering and Information Systems The University of Tokyo 7‐3‐1 Hongo, Bunkyo‐ku Tokyo 113‐8656 Japan