Mesoscopic fluctuations of tunneling through double quantum dots

TL;DR

This paper investigates the conductance fluctuations in a double quantum dot system within the Coulomb blockade regime, revealing their sensitivity to magnetic fields and their relation to mesoscopic charge fluctuations.

Contribution

It introduces an analysis of conductance fluctuations in double quantum dots and links these to mesoscopic charge fluctuations, providing new insights into quantum dot behavior.

Findings

Conductance fluctuations are highly sensitive to magnetic fields.

Fluctuations reveal information about mesoscopic charge in quantum dots.

The pattern of fluctuations can be used to infer charge dynamics.

Abstract

We study fluctuations of conductance of two connected in series dots in the Coulomb blockade regime. The pattern of the fluctuations turns out to be extremely sensitive to a magnetic field. These conductance fluctuations also provide information about the mesoscopic fluctuations of charge of a partially-opened single quantum dot, which are hard to measure directly.