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Title: High-speed switching and logic circuits using Josephson devices

Abstract

The use of Josephson devices as switching components for computer circuits was investigated including a study of the switching properties of the superconductor-semiconductor-superconductor junction. The switching speeds of a single junction and a basic memory cell computed by numerical methods are comparable with the corresponding values for oxide-barrier junctions. Having a much lower Q than the conventional oxide-barrier junction, the junction should not show the previously experienced difficulties caused by junction resonances. The damping of plasma oscillations in the semiconductor junction is also more effective, leading to a shorter switching time. A new type of logic gate employing Josephson devices was investigated. This circuit would automatically unlatch after each operation, thus requiring no external means for resetting. Numerical analysis predicts subnanosecond switch-reset operation for appropriate parameter choices. The qualitative behavior of the circuit was also shown with a mechanical analog. (auth)

Authors:
; ;
Publication Date:
Research Org.:
Univ. of California, Berkeley
OSTI Identifier:
4107146
NSA Number:
NSA-33-017099
Resource Type:
Conference
Resource Relation:
Journal Name: IEEE Trans. Magn., v. MAG-11, no. 2, pp. 770-773; Conference: Applied superconductivity conference, Oakbrook, Illinois, USA, 30 Sep 1974; Other Information: See CONF-740957--. Orig. Receipt Date: 30-JUN-76
Country of Publication:
United States
Language:
English
Subject:
N42220* -Engineering-Facilities & Equipment-Cryogenic & Superconducting Equipment & Devices; 420201* -Engineering-Facilities & Equipment-Cryogenic & Superconducting Equipment & Devices; *JOSEPHSON JUNCTIONS- ELECTRICAL PROPERTIES; *LOGIC CIRCUITS- JOSEPHSON JUNCTIONS; COMPUTERS; EQUIVALENT CIRCUITS; MEMORY DEVICES; OSCILLATIONS; QUALITY FACTOR; SOLID-STATE PLASMA; SWITCHING CIRCUITS

Citation Formats

Chan, H.W., Lum, W.Y., and Van Duzer, T. High-speed switching and logic circuits using Josephson devices. United States: N. p., 1975. Web.
Chan, H.W., Lum, W.Y., & Van Duzer, T. High-speed switching and logic circuits using Josephson devices. United States.
Chan, H.W., Lum, W.Y., and Van Duzer, T. Sat . "High-speed switching and logic circuits using Josephson devices". United States. doi:.
@article{osti_4107146,
title = {High-speed switching and logic circuits using Josephson devices},
author = {Chan, H.W. and Lum, W.Y. and Van Duzer, T.},
abstractNote = {The use of Josephson devices as switching components for computer circuits was investigated including a study of the switching properties of the superconductor-semiconductor-superconductor junction. The switching speeds of a single junction and a basic memory cell computed by numerical methods are comparable with the corresponding values for oxide-barrier junctions. Having a much lower Q than the conventional oxide-barrier junction, the junction should not show the previously experienced difficulties caused by junction resonances. The damping of plasma oscillations in the semiconductor junction is also more effective, leading to a shorter switching time. A new type of logic gate employing Josephson devices was investigated. This circuit would automatically unlatch after each operation, thus requiring no external means for resetting. Numerical analysis predicts subnanosecond switch-reset operation for appropriate parameter choices. The qualitative behavior of the circuit was also shown with a mechanical analog. (auth)},
doi = {},
journal = {IEEE Trans. Magn., v. MAG-11, no. 2, pp. 770-773},
number = ,
volume = ,
place = {United States},
year = {Sat Mar 01 00:00:00 EDT 1975},
month = {Sat Mar 01 00:00:00 EDT 1975}
}

Conference:
Other availability
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