Lamb shift multipolar analysis

@article{Lassalle2017LambSM,
  title={Lamb shift multipolar analysis},
  author={Emmanuel Lassalle and Alexis Devilez and Nicolas Bonod and Thomas Durt and Brian Stout},
  journal={Journal of The Optical Society of America B-optical Physics},
  year={2017},
  volume={34},
  pages={1348-1355}
}
It is now well established that radiative decay of quantum emitters can be strongly modified by their environment. In this paper, we present an exact—within the weak-coupling approximation—multipole expression to compute the Lamb (frequency) shift induced by an arbitrary set of resonant scatterers on a nearby quantum emitter, using multiscattering theory. We also adopt a quasi-normal mode description to account for the line shape of the Lamb shift spectrum in the near field of a plasmonic… 

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