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Quantum flux parametron with magnetic flux regulator

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3 Author(s)
Harada, Y. ; Res. & Dev. Corp. of Japan, Tokyo, Japan ; Hioe, W. ; Goto, E.

A magnetic flux regulator for a quantum flux parametron (QFP) is proposed. The regulator is formed with a parallel connection of a Josephson junction across activation inductors building an RF-SQUID (superconducting quantum interference device). This junction makes a nonlinear bypass channel for magnetic activation flux and contributes to regulation of applied flux and elimination of undesirable external noises. Using this flux regulator, the activation condition tolerance is not only improved, but also a higher speed transition from a nonactivated state to an activated state is expected. QFP operations with the regulators have been observed with integrated circuits.<>

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:1 ,  Issue: 2 )