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An AC Josephson Source for Johnson Noise Thermometry

Published

Author(s)

Samuel Benz, John M. Martinis, Paul Dresselhaus, Sae Woo Nam

Abstract

We have adapted the Josephson arbitrary waveform synthesizer to create a quantized voltage source suitable for calibrating the cross-correlation electronics of a Johnson noise thermometer system. The requirements of long term stability and low voltage amplitude allow dramatic simplification of the bias electronics compared to previous circuits. We describe the bias technique and the superconducting integrated circuit used to generate the pseudo-noise waveforms.
Proceedings Title
Proc., Conference on Precision Electromagnetic Measurements (CPEM)
Conference Dates
June 16-21, 2002
Conference Location
Ottawa, 1, CA

Keywords

Johnson noise, Josephson junction, quantum standard, standard, thermometer, voltage

Citation

Benz, S. , Martinis, J. , Dresselhaus, P. and Nam, S. (2002), An AC Josephson Source for Johnson Noise Thermometry, Proc., Conference on Precision Electromagnetic Measurements (CPEM), Ottawa, 1, CA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=18154 (Accessed March 2, 2024)
Created May 31, 2002, Updated October 12, 2021