From Goldilocks to Twin Peaks: multiple optimal regimes for quantum transport in disordered networks

TL;DR

This paper reveals that certain disordered quantum networks can exhibit multiple optimal regimes for energy transport efficiency, challenging the previous notion of a single optimal environmental coupling.

Contribution

It demonstrates that some physically modeled quantum networks can have multiple ENAQT peaks, expanding understanding of quantum transport regimes.

Findings

Multiple ENAQT peaks observed in steady state transport efficiency.

Challenging the assumption of a single optimal environmental coupling.

Insights into complex quantum transport behaviors in disordered networks.

Abstract

Understanding energy transport in quantum systems is crucial for an understanding of light-harvesting in nature, and for the creation of new quantum technologies. Open quantum systems theory has been successfully applied to predict the existence of environmental noise-assisted quantum transport (ENAQT) as a widespread phenomenon occurring in biological and artificial systems. That work has been primarily focused on several `canonical' structures, from simple chains, rings and crystals of varying dimensions, to well-studied light-harvesting complexes. Studying those particular systems has produced specific assumptions about ENAQT, including the notion of a single, ideal, range of environmental coupling rates that improve energy transport. In this paper we show that a consistent subset of physically modelled transport networks can have at least two ENAQT peaks in their steady state transport efficiency.