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arXiv · 2509.19059

Photon-Mediated Hybridization and Dissipative Transport in a Cavity-QED Ring-Acceptor Architecture

Stephon Alexander·Roger Andrews·Oliver Fox·Sarben Sarkar
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Abstract

We investigate excitation transfer in an engineered cavity QED transport architecture consisting of an N-site donor ring coupled coherently to a central acceptor and driven by a single quantized photon mode. The system evolves under a Lindblad master equation including spontaneous loss and pure dephasing. In the ordered symmetric limit, the dynamics reduce exactly to a photon-bright mode-acceptor trimer, allowing closed-form analytic expressions for transfer efficiencies and mode-resolved losses. We demonstrate that near-unity efficiency arises from photon-mediated hybridization that generates a dark transport channel in which ring population is strongly suppressed. This cavity-induced mechanism bypasses dissipative dark modes of the ring and is distinct from conventional excitonic transport or environmentally assisted quantum transport (ENAQT). Static disorder in photon-ring coupling activates lossy ring modes through hybridization, while intra-ring coupling primarily shifts spectral crossings and can restore efficiency by separating dissipative channels. The model is interpreted as a tunable quantum-optical transport device. Our analytic reduction provides clear design principles for engineered quantum transport networks operating in cavity-QED platforms.

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Stephon Alexander, Roger Andrews, Oliver Fox, Sarben Sarkar. 2025-09-23. Photon-Mediated Hybridization and Dissipative Transport in a Cavity-QED Ring-Acceptor Architecture. https://arxiv.org/abs/2509.19059

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