Dipolar coupling of nanoparticle-molecule assemblies

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2021-03-07
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Language
en
Pages
18
Series
Journal of Chemical Physics, Volume 154, issue 9
Abstract
Strong light-matter interactions facilitate not only emerging applications in quantum and non-linear optics but also modifications of properties of materials. In particular, the latter possibility has spurred the development of advanced theoretical techniques that can accurately capture both quantum optical and quantum chemical degrees of freedom. These methods are, however, computationally very demanding, which limits their application range. Here, we demonstrate that the optical spectra of nanoparticle-molecule assemblies, including strong coupling effects, can be predicted with good accuracy using a subsystem approach, in which the response functions of different units are coupled only at the dipolar level. We demonstrate this approach by comparison with previous time-dependent density functional theory calculations for fully coupled systems of Al nanoparticles and benzene molecules. While the present study only considers few-particle systems, the approach can be readily extended to much larger systems andto include explicit optical-cavity modes.
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Publisher Copyright: © 2021 Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
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Citation
Fojt , J , Rossi , T P , Antosiewicz , T J , Kuisma , M & Erhart , P 2021 , ' Dipolar coupling of nanoparticle-molecule assemblies : An efficient approach for studying strong coupling ' , Journal of Chemical Physics , vol. 154 , no. 9 , 094109 . https://doi.org/10.1063/5.0037853