Benz, S.
, Martinis, J.
, Dresselhaus, P.
and Nam, S.
(2003),
An AC Josephson Source for Johnson Noise Thermometry, IEEE Transactions on Instrumentation and Measurement, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=30112
(Accessed December 4, 2024)
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.
An AC Josephson Source for Johnson Noise Thermometry
Published
Author(s)
, , ,
Abstract
We have adapted the Josephson arbitrary waveform synthesizer to create a quantized voltage noise 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 waveform synthesis, the bias technique and the superconducting integrated circuit used to generate the pseudo-noise waveforms.Citation
IEEE Transactions on Instrumentation and Measurement
Volume
52
Issue
2
Pub Type
Journals
Download Paper
Keywords
digital-analog conversion, frequency synthesizers, Josephson arrays, quantization, signal synthesis, standards, superconducting microwave devices, superconductor-normal-superconductor devices, voltage control
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.
Created March 31, 2003, Updated October 12, 2021