Role of coherence in the plasmonic control of molecular absorption

Emanuele Coccia; Stefano Corni

doi:10.1063/1.5109378

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arXiv · 1907.11660

Role of coherence in the plasmonic control of molecular absorption

Emanuele Coccia·Stefano Corni

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Abstract

The interpretation of nanoplasmonic effects on molecular properties, such as metal-enhanced absorption or fluorescence, typically assumes a fully coherent picture (in the quantum-mechanical sense) of the phenomena. Yet, there may be conditions where the coherent picture breaks down, and decoherence effect should be accounted for. Using a state-of-the-art multiscale model approach able to include environment-induced dephasing, here we show that metal nanoparticle effects on the light absorption by a nearby molecule is strongly affected (even qualitatively, i.e., suppression vs enhancement) by molecular electronic decoherence. The present work shows that decoherence can be thought as a further design element of molecular nanoplasmonic systems.

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Emanuele Coccia, Stefano Corni. 2019-07-26. Role of coherence in the plasmonic control of molecular absorption. https://doi.org/10.1063/1.5109378

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