Dipolar coupling of nanoparticle-molecule assemblies: An efficient approach for studying strong coupling
Artikel i vetenskaplig tidskrift, 2021

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 and to include explicit optical-cavity modes.

Författare

Jakub Fojt

Chalmers, Fysik, Kondenserad materie- och materialteori

T. P. Rossi

Aalto-Yliopisto

Tomasz Antosiewicz

Uniwersytet Warszawski

Mikael Juhani Kuisma

Jyväskylän Yliopisto

Paul Erhart

Chalmers, Fysik, Kondenserad materie- och materialteori

Journal of Chemical Physics

0021-9606 (ISSN) 1089-7690 (eISSN)

Vol. 154 9 0037853

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik

DOI

10.1063/5.0037853

PubMed

33685155

Mer information

Senast uppdaterat

2021-03-22