Quantum partition noise of photo-created electron-hole pairs
L.-H. Reydellet, P. Roche, D. C. Glattli, B. Etienne, and Y. Jin
TL;DR
This paper experimentally investigates quantum partition noise in a conductor without bias, using RF irradiation to analyze photo-assisted shot noise and validate scattering theory predictions.
Contribution
It introduces a method to measure quantum partition noise via RF irradiation and provides a quantitative test of the scattering theory of photo-assisted shot noise.
Findings
Quantum partition noise can be measured without bias voltage.
RF irradiation enables accurate determination of the Fano factor.
Results confirm the scattering theory of photo-assisted shot noise.
Abstract
We show experimentally that even when no bias voltage is applied to a quantum conductor, the electronic quantum partition noise can be investigated using GHz radiofrequency irradiation of a reservoir. Using a Quantum Point Contact configuration as the ballistic conductor we are able to make an accurate determination of the partition noise Fano factor resulting from the photo-assisted shot noise. Applying both voltage bias and rf irradiation we are able to make a definitive quantitative test of the scattering theory of photo-assisted shot noise.
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