Purcell effect at the percolation transition

@article{Szilard2016PurcellEA,
  title={Purcell effect at the percolation transition},
  author={Daniela Szilard and Wilton J. M. Kort-Kamp and Felipe S. S. Rosa and F A Pinheiro and Carlos Farina},
  journal={Physical Review B},
  year={2016},
  volume={94},
  pages={134204}
}
We investigate the spontaneous emission rate of a two-level quantum emitter next to a composite medium made of randomly distributed metallic inclusions embedded in a dielectric host matrix. In the near field, the Purcell factor can be enhanced by two orders of magnitude relative to the case of a homogeneous metallic medium and reaches its maximum precisely at the insulator-metal transition. By unveiling the role of the decay pathways in the emitter's lifetime, we demonstrate that, close to the… 
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