Kouichi Semba joined NTT Labs and revealed elemental composition of 90K cuprate superconductor YBa2Cu3O7 [Jpn. J. Appl. Phys. 26, L429 1987]. 2002-2003, he joined QT-group at TU-Delft lead by professor Hans Mooij. He participated the first Rabi oscillation experiment of a flux qubit. 2003-2012, he had been a group leader of superconducting quantum physics research group. His NTT team achieved a lot of prominent work. In May 2012, he moved to National Institute of Informatics as a project professor.

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• Z. Xiao, T. Fuse, S. Ashhab, F. Yoshihara, Kouichi Semba, M. Sasaki, M. Takeoka, and J. P. Dowling, Fast amplification and rephasing of entangled cat states in a qubit-oscillator system, Phys. Rev. A 99, 013827 (2019)

• Project Professor, National Institute of Information and Communications Technology, Japan

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