Development of Johnson Noise Thermometer Using Quantum Voltage Noise Source

C Urano,S Yoshida,K Yamazawa,A Domae,H Yamamori,Y Fukuyama,N Kaneko,T Yamada,M Maruyama,J Tamba,Y Okazaki,S Kiryu

doi:10.1109/isec.2015.7383450

Development of Johnson Noise Thermometer Using Quantum Voltage Noise Source

C Urano, S Yoshida + Show 10 more

https://doi.org/10.1109/isec.2015.7383450

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Publication Date: Jul 1, 2015

Citations: 6

Affiliation: National Institute of Advanced Industrial Science and Technology, Tokyo City University

#Quantum Voltage Noise Source #Johnson Noise Thermometry + Show 8 more

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Abstract

In an effort to refine the value of the Boltzmann constant (k), we made thermodynamic temperature measurements of k using a Johnson noise thermometry (JNT) system, currently under development, using a quantum voltage noise source (QVNS). The JNT system measures the power spectrum density (PSD) of a sensor resistor using the PSD of a QVNS as a reference. k is then obtained using the Johnson-Nyquist equation. k obtained in our measurements to date has an offset of + (3.7±0.1)×10^(-5) from the CODATA value.

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