1. Department of Mechanical Engineering The University of Tokyo Tokyo Japan
2. KU‐KIST Green School Graduate School of Energy and Environment Korea University Seoul South Korea
3. Nanoscale Quantum Photonics Laboratory RIKEN Saitama Japan
4. Canatu Ltd Helsinki Finland
5. Cryogenic Research Center The University of Tokyo Tokyo Japan
6. Department of Applied Physics Aalto University School of Science Aalto Finland
7. Energy NanoEngineering Laboratory National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Japan
8. Institutes of Innovation for Future Society Nagoya University Nagoya Japan