Affiliation: | 1. Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan 2. Research Institute of Superconductor Electronics, Nanjing University, Nanjing, 210093, China 3. Department of Physics, Universit?t Erlangen-Nürnberg, Erwin-Rommel-Stra?e 1, 91058, Erlangen, Germany
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