Dephasing assisted transport on a biomimetic ring structure

TL;DR

This paper explores how dephasing can enhance excitation transport in biomimetic ring structures, demonstrating the interplay between coherence and environmental effects in improving transfer efficiency.

Contribution

It provides a comparative analysis of transport efficiency in isotropic and biomimetic rings, highlighting the constructive role of dephasing in disordered quantum systems.

Findings

Dephasing can improve transport efficiency in disordered rings.

Biomimetic structures show enhanced transfer capabilities.

Interplay between coherence and environment is crucial for optimization.

Abstract

We address two-level systems arranged in ring configurations affected by static disorder. In particular we investigate the role of dephasing in the transport of an excitation along the ring. We compare the efficiency of the transfer process on isotropic rings and on biomimetic rings modelled according to the structure of light-harvesting complexes. Our analysis provides a simple but clear and interesting example of how an interplay between the coherent dynamics of the system and the incoherent action of the environment can enhance the transfer capabilities of disordered lattices.