DocumentCode
994474
Title
Measurements of current noise in DC SQUIDS
Author
Martinis, J.M. ; Clarke, Johan
Volume
19
Issue
3
fYear
1983
fDate
5/1/1983 12:00:00 AM
Firstpage
446
Lastpage
448
Abstract
The current noise circulating around the loop of a tunnel junction dc SQUID has been measured as a function of applied flux. The flux noise generated by this current was coupled via a superconducting transformer to a second dc SQUID that was used to measure the noise in a null-balancing configuration. The voltage noise across the SQUID was also measured, using a cooled LC-resonant circuit, and the correlation between the voltage and current noises was determined. The measured values of the noises are in good agreement with values obtained from an analog simulator.
Keywords
Josephson device noise; Circuit noise; Circuit simulation; Coupling circuits; Current measurement; DC generators; Josephson junctions; Noise generators; Noise measurement; SQUIDs; Superconducting device noise;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1983.1062411
Filename
1062411
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