Answers are grounded in this paper and cite their sources.
We describe two methods of measuring the 1/f noise in a dc SQUID. One is sensitive only to 1/f noise in the critical currents of the junctions, and the other is sensitive only to 1/f flux noise that is not associated with critical current fluctuations. From measurements on a planar thin-film dc SQUID incorporating Josephson tunnel junctions we conclude that the predominant source of 1/f noise is not noise in the crititcal currents, but rather an apparent flux noise of unknown origin.
No takes yet. Share an insight, caveat, or question.
Koch et al. (1983) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: