Coherent switching by detuning a side-coupled quantum-dot system

TL;DR

This paper explores how adjusting electronic energy levels in a side-coupled quantum-dot system enables phase-coherent switching, highlighting potential for nanoscale electronic device control.

Contribution

It introduces a method for coherent switching in quantum-dot systems through energy detuning, with analysis of quantum coherence effects in such configurations.

Findings

Coherent switching is achievable by tuning electronic energy levels.

Quantum coherence effects depend on the detuning and positioning of quantum dots.

Results suggest potential for nanoscale electronic device applications.

Abstract

We investigate phase coherent electronic transport in an open quantum system, which consists of quantum dots side-coupled to a nanowire. It is demonstrated that coherent switching can be characterized by adjusting the electronic energy. A comparative analysis of quantum coherence effects in side-coupled quantum-dot systems is presented. Our results demonstrate the relevance of electronic nanodevices based on coherent switching by appropriately detuning the side-coupled quantum dots that are located at variable distance along a wire.