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Radiative decay of an emitter due to non-Markovian interactions with dissipating matter

Jain, Kritika and Venkatapathi, Murugesan (2022) Radiative decay of an emitter due to non-Markovian interactions with dissipating matter. In: Journal of Physics: Condensed Matter, 34 (26). ISSN 0953-8984

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Official URL: https://doi.org/10.1088/1361-648X%2Fac671f


It is known that the more tractable Markovian models of coupling suited for weak interactions may overestimate the Rabi frequency notably when applied to the strong-coupling regime. Here, a more significant consequence of the non-Markovian interaction between a photon emitter and dissipating matter such as resonant plasmonic nanoparticles is described. A large increase of radiative decay and a diminished non-radiative loss is shown, which unravels the origin of unexpected large enhancements of surface-enhanced-Raman-spectroscopy, as well as the anomalous enhancements of emission due to extremely small fully absorbing metal nanoparticles less than 10 nm in dimensions. We construct the mixture of pure states of the coupled emitter-nanoparticle system, unlike conventional methods that rely on the orthogonal modes of the nanoparticle alone.

Item Type: Journal Article
Publication: Journal of Physics: Condensed Matter
Publisher: IOP Publishing Ltd
Additional Information: The copyright of this article belongs to the Authors.
Keywords: dissipating matter; non-Markovian; spontaneous emission; strong coupling
Department/Centre: Division of Interdisciplinary Sciences > Computational and Data Sciences
Date Deposited: 23 May 2022 05:21
Last Modified: 20 Jun 2022 11:24
URI: https://eprints.iisc.ac.in/id/eprint/72334

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