Published in
American Physical Society, Physical Review A, 6(89), 2014
DOI: 10.1103/physreva.89.063830
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- [arxiv.org] | PDF
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Effect of long-range spatial correlations on the lifetime statistics of an emitter in a two-dimensional disordered lattice
,
A. García-Martín ,
L. S. Froufe-Pérez,
M. I. Marqués
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Abstract
The effect of spatial correlations on the Purcell effect in a bidimensional dispersion of resonant nanoparticles is analyzed. We perform extensive calculations on the fluorescence decay rate of a point emitter embedded in a system of nanoparticles statistically distributed according to a simple two-dimensional lattice-gas model near the critical point. For short-range correlations (high temperature thermalization) the Purcell factors present a long-tailed statistic which evolves towards a bimodal distribution when approaching the critical point where the spatial correlation length diverges. Our results suggest long-range correlations as a possible origin of the large fluctuations of experimental decay rates in disordered metal films.