RSFQ TECHNOLOGY: PHYSICS AND DEVICES

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  • PAUL BUNYK
    State University of New York at Stony Brook Stony Brook, NY 11794-3800, U.S.A.
  • KONSTANTIN LIKHAREV
    State University of New York at Stony Brook Stony Brook, NY 11794-3800, U.S.A.
  • DMITRY ZINOVIEV
    State University of New York at Stony Brook Stony Brook, NY 11794-3800, U.S.A.

Description

<jats:p> Rapid Single-Flux-Quantum (RSFQ) logic, based on the representation of digital bits by single quanta of magnetic flux in superconducting loops, may combine several-hundred-GHz speed with extremely low power dissipation (close to 10<jats:sup>-18</jats:sup> Joule/bit) and very simple fabrication technology. The drawbacks of this technology include the necessity of deep (liquid-helium-level) cooling of RSFQ circuits and the rudimentary level of the currently available fabrication and testing facilities. The objective of this paper is to review RSFQ device physics and also discuss in brief the prospects of future development of this technology in the light of the tradeoff between its advantages and handicaps. </jats:p>

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