# Non-hermitian Hamiltonian description for quantum plasmonics: from dissipative dressed atom picture to Fano states

@article{Varguet2019NonhermitianHD, title={Non-hermitian Hamiltonian description for quantum plasmonics: from dissipative dressed atom picture to Fano states}, author={H. Varguet and Benjamin Rousseaux and David Dzsotjan and H R Jauslin and St{\'e}phane Gu{\'e}rin and G'erard Colas des Francs}, journal={Journal of Physics B: Atomic, Molecular and Optical Physics}, year={2019}, volume={52} }

We derive effective Hamiltonians for a single dipolar emitter coupled to a metal nanoparticle (MNP) with particular attention devoted to the role of losses. For small particles sizes, absorption dominates and a non-hermitian effective Hamiltonian describes the dynamics of the hybrid emitter-MNP nanosource. We discuss the coupled system dynamics in the weak and strong coupling regimes offering a simple understanding of the energy exchange, including radiative and non-radiative processes. We…

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