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.

Progress toward a 1 V Pulse-Driven AC Josephson Voltage Standard

Published

Author(s)

Samuel P. Benz, Paul D. Dresselhaus, Alain Rufenacht, Norman F. Bergren, Joseph R. Kinard Jr., Regis Landim

Abstract

We present a new record rms output voltage of 275 mV, which is a 25 % improvement over the maximum achieved with previous ac Josephson voltage standard (ACJVS) circuits. We demonstrate operating margins for these circuits and use them to measure the harmonic distortion of a commercial digitizer. Having exceeded the threshold of 125 mV rms for a single array of Josephson junctions, we propose and discuss the features of an eight-array circuit capable of achieving 1 V rms. We investigate the use of a resistive-divider to extend the ACJVS voltage accuracy to higher voltages. By use of a switched-input measurement technique, an integrating, sampling digital voltage meter, a resistive voltage divider, and ACJVS synthesized sine waves as reference voltages, we characterize the stability of a commercial calibration source for a few voltages up to 2.7 V.
Citation
IEEE Transactions on Instrumentation and Measurement
Volume
58
Issue
4

Keywords

Digital-analog conversion, Josephson arrays, quantization, signal synthesis, standards, superconductor-normal-superconductor devices, voltage measurement

Citation

Benz, S. , Dresselhaus, P. , Rufenacht, A. , Bergren, N. , Kinard, J. and Landim, R. (2009), Progress toward a 1 V Pulse-Driven AC Josephson Voltage Standard, IEEE Transactions on Instrumentation and Measurement, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=33061 (Accessed April 20, 2024)
Created April 1, 2009, Updated February 19, 2017