Professor Nobuyuki Yoshikawa, who leads the superconductivity electronics group at Yokohama National University's Institute of Advanced Sciences, is a recognized authority in the field of superconductivity electronics. His primary research interests involve superconductive devices and their applications in digital and analog circuits, with a particular focus on energy-efficient superconducting digital circuits. Prof. Yoshikawa and his team have made significant advancements in single-flux-quantum (SFQ) circuits and adiabatic-quantum-flux-parametron (AQFP) logic. They pioneered the design of SFQ integrated circuits and microprocessors and successfully developed SFQ floating-point units and an SFQ FFT microprocessor, operating them at approximately 50 GHz. Yoshikawa's team has recently been revolutionizing AQFP logic, the most energy-efficient digital logic family demonstrated so far. They've verified the operation of an AQFP gate with minimal energy consumption and successfully operated the world's first AQFP microprocessor. With over 320 journal papers to their credit, the group's extensive research highlights Yoshikawa's significant contribution to his field