Long-Range Plasmon-Assisted Dipole-Dipole Interactions with Microcavities

Long-range dipole-dipole interactions (DDIs) are essential for enabling scalable quantum technologies. However, their practical realization is fundamentally limited by spatial rapid decay and environmental noise. In this study, we propose a plasmon-assisted microcavities platform that integrates a photonic cavity with a plasmonic antenna for enhanced energy transfer between donors and acceptors. Benefiting from the resonating of the acceptors within the microcavity after receiving energy, stable long-range DDIs with an interaction distance of ∼13.6 μm and lasing emission can be achieved at ambient temperature. The results of this study suggest the potential for long-range, efficient DDIs in on-chip quantum systems with potential applications in quantum sensing and energy harvesting.