Logic delays of 5-. mu. m current-switched Josephson gates

Journal Article · Wed Apr 14 23:00:00 EST 1982 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.93211· OSTI ID:5582534

Pei, S S

Logic delays of a current-switched latching gate called the Josephson atto-Weber switch and its use in a dc powered flip-flop module have been investigated. Experimental circuits with cascade chains of 31 gates were fabricated using 5-..mu..m square lead alloy tunnel junctions. Delays were measured on both the latching and the unlatching chains. The experimental circuits demonstrate operation faster than those reported for other Josephson gate designs using the same linewidth. For the latching OR gate with fanout of 3, the shortest measured gate delay is 15 ps.

• Research Organization: Bell Laboratories, Murray Hill, New Jersey 07974
• OSTI ID: 5582534
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 40:8; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALLOYS
COMPARATIVE EVALUATIONS
CURRENTS
DATA
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
EQUIPMENT
EXPERIMENTAL DATA
FABRICATION
INFORMATION
JOSEPHSON JUNCTIONS
JUNCTIONS
LEAD ALLOYS
LOGIC CIRCUITS
NUMERICAL DATA
SUPERCONDUCTING JUNCTIONS
SWITCHES
TUNNEL EFFECT