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.

Method for Ensuring Accurate AC Waveforms with Programmable Josephson Voltage Standards

Published

Author(s)

Charles J. Burroughs, Alain Rufenacht, Samuel Benz, Paul Dresselhaus

Abstract

The amplitudes of stepwise-approximated sine waves generated by programmable Josephson voltage standards (PJVS) are not intrinsically accurate because the transitions between the quantized voltages depend on numerous conditions. We have developed a method that ensures that the total rms output voltages of arbitrary ac waveforms synthesized by the PJVS are accurate and referenced to the quantized Josephson voltages. This is accomplished by digitizing the entire output waveform, utilizing the quantized voltages to correct digitizer gain, noise, and nonlinearity, and then utilizing measurements of the bandwidth, risetime, and harmonic content to precisely tune the bias parameters. Our goal is to develop an AC standard source for voltage metrology that can directly synthesize voltages with the accuracy expected of a quantum-based standard without the use of a thermal voltage converter.
Citation
IEEE Transactions on Instrumentation and Measurement
Volume
62
Issue
6

Keywords

Digital-analog conversion, Josephson arrays, Quantization, Signal synthesis, Standards, Superconducting integrated circuits, Voltage measurement

Citation

Burroughs, C. , Rufenacht, A. , Benz, S. and Dresselhaus, P. (2013), Method for Ensuring Accurate AC Waveforms with Programmable Josephson Voltage Standards, IEEE Transactions on Instrumentation and Measurement, [online], https://doi.org/10.1109/TIM.2013.2250192, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=911695 (Accessed June 20, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created May 31, 2013, Updated October 12, 2021