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Johnson Noise Thermometry Using a Quantum Voltage Noise Source for Calibration

Published

Author(s)

Sae Woo Nam, Samuel P. Benz, Paul D. Dresselhaus, Weston L. Tew, D. R. White, John M. Martinis

Abstract

We describe our progress towards a high-precision measurement of temperature using Johnson noise. Using a Quantized Voltage Noise Source (QVNS) based on the Josephson effect as a calibrated noise source, we have been able to measure the gallium and water triple point temperatures with an accuracy approaching 100 ppm.
Proceedings Title
Conference on Precision Electromagnetic Measurements Digest
Conference Dates
June 27-July 2, 2004
Conference Location
London,
Conference Title
Conference on Precision Electromagnetic Measurements

Keywords

ac voltage standard, Digital-analog conversion, Josephson arrays, Josephson junction, noise, primary thermometry, Quantization, temperature, thermometry, waveform synthesis

Citation

Nam, S. , Benz, S. , Dresselhaus, P. , Tew, W. , White, D. and Martinis, J. (2004), Johnson Noise Thermometry Using a Quantum Voltage Noise Source for Calibration, Conference on Precision Electromagnetic Measurements Digest, London, , [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=31626 (Accessed April 23, 2024)
Created June 1, 2004, Updated February 19, 2017