Zero-point term and quantum eects in the Johnson noise of resistors : a critical appraisal

@inproceedings{Kish2016ZeropointTA,
title={Zero-point term and quantum eects in the Johnson noise of resistors : a critical appraisal},
author={Laszlo B. Kish and Gunnar A. Niklasson and Claes G{\"o}ran Granqvist},
year={2016}
}

There is a longstanding debate about the zero-point term in the Johnson noise voltage of a resistor. This term originates from a quantumtheoretical treatment of the fluctuation-dissipation theorem (FDT). Is the zero-point term really there, or is it only an experimental artifact, due to the uncertainty principle, for phase-sensitive amplifiers? Could it be removed by renormalization of theories? We discuss some historical measurement schemes that do not lead to the eect predicted by the FDT… CONTINUE READING