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From: Sam Wormley on 12 Mar 2010 16:22
Scattered and Coupled
Cavity electrodynamics explores the coupling of light with
matter�ideally, that of a single photon with a single atom. Typically,
this requires that the photon and the atom be confined to increase the
likelihood of interaction, but scattering of light is an unavoidable
product of an engineered device and is usually considered to be
detrimental because it leads to loss of the photons from the cavity.
Sapienza et al. (p. 1352; see the Perspective by Wiersma) saw extreme
light scattering as an opportunity for the spontaneous generation of
localized modes of light that can be exploited to induce light-matter
coupling. Thus, working with a process where scattering is considered a
resource rather than a nuisance, as in this case, may prove useful for
realizing robust quantum information devices.

http://www.sciencemag.org/cgi/content/abstract/327/5971/1352
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