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Quantum flux parametron: a single quantum flux device for Josephson supercomputer

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9 Author(s)
Hosoya, M. ; Res. Dev. Corp. of Japan, Tokyo, Japan ; Hioe, W. ; Casas, J. ; Kamikawai, R.
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A quantum flux parametron (QFP), a single quantum flux superconductive device that has a potential of up to 100-GHz switching with nW-order power dissipation, is considered. The potential of the QFP and key technologies when QFPs are applied to a Josephson supercomputer are described. Switching speed, stability, and power dissipation of a QFP are discussed. QFP gates, circuits, and systems are next described. Then, ultra-fast clock distribution using a standing wave is explained. High-speed operation at more than 10 GHz and 10/sup 14/ error-free operations per QFP have been demonstrated. Finally described is a high-density packaging scheme by three-dimensional integration, which is very important for ultra-high speed circuits because the propagation delay becomes dominant in such circuits.<>

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