Efficient excitation transfer in an LH2-inspired nanoscale stacked ring geometry

TL;DR

This paper demonstrates that a bio-inspired 3D stacked ring of quantum emitters can achieve highly efficient excitation transfer, offering potential for advanced light-matter energy transfer applications.

Contribution

It introduces a novel 3D concentric ring structure inspired by LH2 complexes and shows its capability for efficient excitation transfer using quantum optical modeling.

Findings

High excitation transfer efficiency demonstrated in the 3D ring structure.

Dependence of transfer efficiency on system parameters analyzed.

Potential for engineering biomimetic light-matter platforms identified.

Abstract

Subwavelength ring-shaped structures of quantum emitters exhibit outstanding radiation properties and are useful for antennas, excitation transport, and storage. Taking inspiration from the oligomeric geometry of biological light-harvesting 2 (LH2) complexes, we study here generic examples and predict highly efficient excitation transfer in a three-dimensional (3D) subwavelength concentric stacked ring structure with a diameter of 400 $nm$, formed by two-level atoms. Utilizing the quantum optical open system master equation approach for the collective dipole dynamics, we demonstrate that, depending on the system parameters, our bio-mimicked 3D ring enables efficient excitation transfer between two ring layers. Our findings open prospects for engineering other biomimetic light-matter platforms and emitter arrays to achieve efficient energy transfer.