Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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.
Proceedings Title
Proc. VII Semetro
Conference Dates
September 12-14, 2007
Conference Location
Belo Horizonte
Conference Title
7th International Seminar on Electrical Metrology


Josephson arrays, Quantization, standards., voltage measurement


Landim, R. , Benz, S. , Dresselhaus, P. and Burroughs, C. (2008), Systematic-Error Signals in the AC Josephson Voltage Standard: Measurement and Reduction, Proc. VII Semetro, Belo Horizonte, -1, [online], (Accessed June 15, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created June 30, 2008, Updated January 27, 2020