Systematic-Error Signals in the AC Josephson Voltage Standard: Measurement and Reduction
Regis Landim, Samuel P. Benz, Paul D. Dresselhaus, Charles J. Burroughs
We investigate the dominant frequency-dependent systematic error signals (SES) in the ac Josephson voltage standard. We describe our error measurement technique and a number of methods to reduce the errors. Most importantly we found that a small change in on-chip wiring significantly reduced the SES, improved SES measurement stability, and enabled a suitable bias correction method. We demonstrate that reduction of the SES using various techniques greatly improves agreement between the ac-dc differences of the two arrays and improves the absolute ac voltage accuracy.
Josephson arrays, Quantization, standards., voltage measurement
, Benz, S.
, Dresselhaus, P.
and Burroughs, C.
Systematic-Error Signals in the AC Josephson Voltage Standard: Measurement and Reduction, Proc. VII Semetro, Belo Horizonte, -1, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32671
(Accessed December 2, 2023)