Removing spin blockade by photon-assisted tunneling in double quantum dots

TL;DR

This paper investigates how photon-assisted tunneling can eliminate spin blockade in double quantum dots, enabling electron transport despite Pauli exclusion constraints.

Contribution

It introduces a method to remove spin blockade by applying a resonant ac field that influences the contacts to the leads, a novel approach in quantum dot transport control.

Findings

Photon-assisted tunneling can lift spin blockade in double quantum dots.

Resonant ac fields modify contact properties to restore electron transport.

The approach offers a new way to control quantum dot conductance.

Abstract

Pauli exclusion principle can lead to a supression of transport through double quantum dots, even if both quantum dots are connected by a resonant driving ac field. In this work, we study how this effect, known as spin blockade, can be removed by means of the influence of the driving field on the contacts to the leads.