Signal enhancement in a r.f. SQUID using stochastic resonance |
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| Authors: | A. D. Hibbs E. W. Jacobs A. R. Bulsara J. J. Bekkedahl F. Moss |
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| Affiliation: | (1) Quantum Magnetics, 11578 Sorrento Valley Road, 92121 San Diego, CA, USA;(2) NCCOSC RDT&E Division, Code 573, 92152-5000 San Diego, CA, USA;(3) Department of Physics, University of Missouri, 63121 St. Louis, MO, USA |
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| Abstract: | ![]()
Summary We describe an experiment on a simple superconducting loop with a Josephson junction subject to a time-sinusoidal magnetic flux embedded in a noise background. The response is shown to display thestochastic-resonance effect, wherein the output signal-to-noise-ratio passes through a maximum at a critical value of the noise strength. Escape times probability density functions are also obtained experimentally Paper presented at the International Workshop ?Fluctuations in Physics and Biology: Stochastic Resonance, Signal Processing and Related Phenomana?, Elba, 5–10 June 1994. |
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| Keywords: | Superconducting quantum interference devices (SQUIDs) (including magnetometers electromagnetic radiation sources and detectors and computer logic and memory devices) |
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