Work

Quantum excitation transfer in an artificial photosynthetic light-harvesting system

Year: 2025

Type: article

Abstract: We analytically derive transfer probabilities and efficiencies for an artificial light-harvesting photosynthetic system, which consists of a ring coupled to a central acceptor. For an incident photon pair, we find near-perfect single excitation transfer efficiency with negligible double excitation transfer in the weak-coupling regime. In the strong-coupling regime, single excitation transfer efficiency was greater than $90%$, while the double excitation efficiency was approximately $50%$. We have found that the three main factors which determine high transfer efficiencies are large acceptor probabilities, long acceptor decay times, and strong photon-ring coupling. A possible implementation of the theoretical framework to bio-inspired solar energy devices is also discussed.

Source: Physical Review A

DOI: 10.1103/xyjw-lrf4

Authors: Stephon Alexander, Roger Andrews, Oliver Fox, Sarben Sarkar