Systematic-Error Signals in the AC Josephson Voltage Standard: Measurement and Reduction

R. Pinheiro Landim, S.P. Benz, P.D. Dresselhaus, C.J. Burroughs
2008 IEEE Transactions on Instrumentation and Measurement  
We investigate the dominant frequencydependent 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
more » ... rences of the two arrays and improves the absolute ac voltage accuracy.
doi:10.1109/tim.2007.915100 fatcat:lppgszzcpjhwnd7hnw3na32te4