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Frontiers in Optics

Transfer Efficiency in a Light-Harvesting Trimer System Using a Pair of Time-Delayed Laser Pulses

Ethan Wyke, Abuenameh Aiyejina, Roger Andrews, Andrew D. Greentree

Published Jan 1, 2024• 0 citations
Publisher

Abstract

We analytically derive the wavefunction for a light-harvesting trimer system excited by time-delayed laser pulses. We find suppression and enhancement of the transfer efficiency depending on the time delay between the pair of laser pulses.
DOI
10.1364/fio.2024.jtu5a.38

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In this paper, the theory of the transfer efficiency of a light-harvesting system consisting of a trimer ring coupled to an acceptor site is presented. When the ring has a prepared excitation or is excited using a laser pulse, the maximum transfer efficiency is approximately 0.5, while a near-perfect transfer efficiency is generated by a single photon. The near-perfect efficiency results from the creation of a dark state by the photon, which suppresses the effect of spontaneous decay from the donor.
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