Full Counting statistics of level renormalization in electron transport through double quantum dots

TL;DR

This paper investigates how level renormalization affects electron transport in double quantum dots, revealing a dynamic charge blockade and super-Poissonian noise, with external heat baths suppressing noise through dephasing and relaxation.

Contribution

It provides a detailed analysis of full counting statistics in double quantum dots, highlighting the role of level renormalization and environmental effects on noise characteristics.

Findings

Level renormalization induces a dynamic charge blockade.

Energy renormalization leads to super-Poissonian noise.

External heat baths suppress noise via dephasing and relaxation.

Abstract

We examine the full counting statistics of electron transport through double quantum dots coupled in series, with particular attention being paid to the unique features originating from level renormalization. It is clearly illustrated that the energy renormalization gives rise to a dynamic charge blockade mechanism, which eventually results in super-Poissonian noise. Coupling of the double dots to an external heat bath leads to dephasing and relaxation mechanisms, which are demonstrated to suppress the noise in a unique way.