Basic HTML version of Foils prepared 10 Sept 1996

Foil 19 Superconducting Technology -- Past

From New CPS615Master Foils-- 26 August 96 Basic Simulation Track for Computational Science CPS615 -- Fall Semester 96. by Geoffrey C. Fox


1 Superconductors produce wonderful "wires" which transmit picosecond (10^-12 seconds) pulses at near speed of light
  • Superconducting is lower power and faster than diffusive electron transmission in CMOS
  • At about 0.35micron chip feature size, CMOS transmission time changes from domination by transmission (Distance) issues to resistive (diffusive effects)
2 Niobium used in constructing such superconducting circuits can be processed by similar fabrication techniques to CMOS
3 Josephson Junctions allow picosecond performance switches
4 BUT IBM (!969-1983) and Japan (MITI 1981-90) terminated major efforts in this area

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© on Tue Oct 7 1997