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.

PUBLICATIONS

Johnson Noise Thermometry Measurement of the Boltzmann Constant with a 200 Ohm Sense Resistor

Published

Author(s)

Alessio Pollarolo, Tae H. Jeong, Samuel Benz, Horst Rogalla

Abstract

In 2010 NIST measured the Boltzmann constant k by use of an electronic technique that measured the Johnson noise of a 100 Ohm resistor at the triple point of water (TPW). The NIST Johnson noise thermometry (JNT) system used as a reference a voltage waveform that was synthesized with a quantum voltage noise source (QVNS) that consisted of pulse-driven arrays of Josephson-junctions. In this paper, we attempt to reproduce the previous measurement of k by repeating the JNT measurement with a 200 Ohm sense resistor and appropriately modified QVNS circuit and waveform. Preliminary results show agreement with the previous value within the measurement uncertainty.
Proceedings Title
Conference on Precision Electromagnetic Measurements Conference Digest
Volume
28
Conference Dates
July 1-6, 2012
Conference Location
National Harbor, MD, US
Conference Title
Conference on Precision Electromagnetic Measurements
Pub Type
Conferences

Download Paper

https://doi.org/10.1109/CPEM.2012.6250878
Local Download

Keywords

Boltzmann equation, Correlation, Digital-analog conversion, Josephson arrays, Measurement units, Noise Measurement, Quantization, Signal synthesis, Standards, Temperature.
Thermometry metrology, Quantum information science, Metrology and Electrical / electromagnetic metrology

Citation

Pollarolo, A. , Jeong, T. , Benz, S. and Rogalla, H. (2012), Johnson Noise Thermometry Measurement of the Boltzmann Constant with a 200 Ohm Sense Resistor, Conference on Precision Electromagnetic Measurements Conference Digest, National Harbor, MD, US, [online], https://doi.org/10.1109/CPEM.2012.6250878, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910628 (Accessed April 18, 2024)

Created June 30, 2012, Updated October 12, 2021