Elmquist, R.
, Zimmerman, N.
and Huber, W.
(2002),
Using a High-Value Resistor in Triangle Comparisons of Electrical Standards, IEEE Transactions on Instrumentation and Measurement, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=30082
(Accessed May 18, 2024)
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Using a High-Value Resistor in Triangle Comparisons of Electrical Standards
Published
Author(s)
, , William Huber
Abstract
We propose an experiment with some advantages over other direct quantum metrology triangle comparisons. First, by using a cryogenic resistor that can be calibrated, the QHR standard needs to be used only for short periods. Second, the experiment does not require a voltage detector. This eliminates one external source of noise and allows fast current reversals. Third, feedback that might contribute to excess noise and SQUID flux-jump behavior is also absent in the primary comparison system. This experiment could be run at higher currents and without supervision for extended periods of time, to benefit from statistical reduction of noise. We have developed a cryogenic current comparator for calibrating the cryogenic resistor directly against the QHR.Citation
IEEE Transactions on Instrumentation and Measurement
Pub Type
Journals
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Keywords
Fundamental Constants , Quantum Hall Effect, Resistance Standards, Josephson Effect
Citation
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Created May 31, 2002, Updated October 12, 2021