Title :
Sub-10 ps high-gain direct coupled Josephson logic gate
Author :
Hohkawa, Kohji ; Tazo, Y. ; Nagata, Kazuyuki ; Ishida, A.
Author_Institution :
NTT, Musashino Electrical Communication Laboratory, Musashino, Japan
Abstract :
A cascade chain of high-gain direct coupled logic gates with a 25×20 ¿m2 gate size was designed and fabricated using Pb-alloy Josephson technology with Josephson junctions of 3 ¿m diameter and 2 ¿m line-width resistors. Logic delays as low as 9 ps and power-delay products as small as 30 aJ were experimentally obtained.
Keywords :
Josephson effect; lead alloys; logic gates; superconducting junction devices; 9 ps logic delays; DCL; Josephson junctions; Josephson logic gate; Pb-alloy Josephson technology; cascade chain; high-gain direct coupled logic gates; power-delay products;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830203
