AN INTERNATIONAL COMPARISON OF AC JOSEPHSON VOLTAGE STANDARDS BETWEEN NRC, CANADA AND VSL, THE NETHERLANDS

Piotr S. Filipski, Helko van den Brom, Ernest Houtzager

Abstract

The paper presents results of an international comparison of two quantum AC Josephson Voltage Standards based on pulse- driven Josephson arrays. The two systems differ in several hardware and software characteristics as well as in the level of automation, features which can influence the accuracy of transferring the quantum -standard voltage value to a calibrated instrument. The comparison was conducted at 100mV, 20mV and 12mV, at frequencies between 2.5kHz and 100kHz. An electronically-aided thermal transfer standard was used as a travelling standard. At the most accurate voltage and frequency point, 100mV at 2.5kHz, both laboratories agreed to better than 1 part in 106.

Keywords

Josephson arrays, signal synthesis, standards, ac voltage standard

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IMEKO-TC4-2011-018.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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