Current rectification in double quantum dot through fermionic reservoir engineering

TL;DR

This paper demonstrates how fermionic reservoir engineering enables directional electron transport in double quantum dots, with controllable directionality via magnetic fields, opening new possibilities for nanoelectronic device design.

Contribution

It introduces fermionic reservoir engineering as a novel method to control electron transport directionality in quantum dots, combining theoretical analysis with exact solutions.

Findings

Directional transport achieved through interference of coherent and dissipative coupling.

Directionality can be reversed or turned off/on dynamically with magnetic field tuning.

The approach paves the way for new nanoelectronic device functionalities.

Abstract

Reservoir engineering is a powerful tool for the robust generation of quantum states or transport properties. Using both a weak-coupling quantum master equation and the exact solution, we show that directional transport of electrons through a double quantum dot can be achieved through an appropriately designed electronic environment. Directionality is attained through the interference of coherent and dissipative coupling. The relative phase is tuned with an external magnetic field, such that directionality can be reversed, as well as turned on and off dynamically. Our work introduces fermionic reservoir engineering, paving the way to a new class of nanoelectronic devices.