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

Published

June 30, 2008

Author(s)

Regis Landim, Samuel P. Benz, Paul D. Dresselhaus, Charles J. Burroughs

Abstract

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

Volume

57

Issue

6

Conference Dates

September 12-14, 2007

Conference Location

Belo Horizonte

Conference Title

7th International Seminar on Electrical Metrology

Pub Type

Conferences

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Keywords

Josephson arrays, Quantization, standards., voltage measurement

Citation

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], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32671 (Accessed April 26, 2024)