Related papers: Time-resolved quantum correlations in electronic noise

Time-resolved quantum correlations in electronic noise

URL: http://arxiv.org/abs/2404.09068v1
Date: Sat, 13 Apr 2024 19:34:39 GMT
Title: Time-resolved quantum correlations in electronic noise
Authors: Jean-Olivier Simoneau, Sébastien Jezouin, Christian Lupien, Bertrand Reulet,
Abstract summary: We demonstrate experimentally how correlations of current fluctuations at two different times $t$ and $t+tau$ depend on the shape of $V(t)$. It demonstrates the counterpart of the ac Josephson effect in superconducting junctions, to a normal, non-superconducting mesoscopic device.
Score: 28.32223907511862
License: http://creativecommons.org/licenses/by/4.0/
Abstract: The statistics of quantum transport in nanostructures can be tailored by a time-dependent bias voltage $V(t)$. We demonstrate experimentally how correlations of current fluctuations at two different times $t$ and $t+\tau$ depend on the shape of $V(t)$ via the phase accumulated by the electronic wavefunctions between $t$ and $t+\tau$. For this we measure the current-current correlation of the shot noise of an ac+dc biased tunnel junction using a 10 GHz bandwidth, time-resolved detection. Our result allows to explore correlations within a single excitation period. It demonstrates the counterpart of the ac Josephson effect in superconducting junctions, to a normal, non-superconducting mesoscopic device.

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