Title :
Quantum flux parametron: a single quantum flux device for Josephson supercomputer
Author :
Hosoya, M. ; Hioe, W. ; Casas, J. ; Kamikawai, R. ; Harada, Y. ; Wada, Y. ; Nakane, H. ; Suda, R. ; Goto, E.
Author_Institution :
Res. Dev. Corp. of Japan, Tokyo, Japan
fDate :
6/1/1991 12:00:00 AM
Abstract :
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.<>
Keywords :
Josephson effect; packaging; superconducting junction devices; Josephson supercomputer; QFP; high-density packaging scheme; power dissipation; propagation delay; quantum flux parametron; single quantum flux device; stability; standing wave; switching speed; three-dimensional integration; ultra-fast clock distribution; Circuit stability; Clocks; Electronics packaging; Error-free operation; High temperature superconductors; Josephson junctions; Power dissipation; Propagation delay; Supercomputers; Superconducting logic circuits;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
