Saito Shinichi | Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan

Central Research Laboratory Hitachi Ltd.

School Of Electronics And Computer Science University Of Southampton

Quantum Nanoelectronics Research Center And Department Of Physical Electronics Tokyo Institute Of Technology

Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan

School of Electronic and Computer Science, University of Southampton, Highfield, Southampton SO17 1BJ, U.K.

Quantum Nanoelectronics Research Center, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

Quantum 14 Co., Ltd., Koganei, Tokyo 184-8588, Japan

School of Electronics and Computer Science, University of Southampton, SO17 1BJ Southampton, U.K.

Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan

Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan

Quantum Nanoelectronics Research Center (QNERC), Tokyo Institute of Technology, Meguro, Tokyo 152-8550, Japan

Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan