1. QunaSys Inc., Aqua Hakusan Building 9F, 1-13-7 Hakusan, Bunkyo, Tokyo 113-0001, Japan
2. Department of Physics, ETH Zürich, CH 8093 Zürich, Switzerland
3. Condensed Matter Theory Group, LSM. NES, Paul Scherrer Institute, Villigen PSI CH-5232, Switzerland
4. Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
5. Center for Quantum Information and Quantum Biology, Osaka University, Osaka 560-8531, Japan
6. JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
7. Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
8. Mitsubishi Chemical Corporation, Science & Innovation Center, 1000, Kamoshida-cho, Aoba-ku, Yokohama 227-8502, Japan