Wednesday, March 20, 2013

1303.4655 (Sergey E. Skipetrov et al.)

Absence of Anderson localization of light in a random ensemble of point

Sergey E. Skipetrov, Igor M. Sokolov
As discovered by Philip Anderson in 1958, strong disorder can block propagation of waves and lead to the localization of wave-like excitations in space. Anderson localization of light is particularly exciting in view of its possible applications for random lasing or quantum information processing. We show that in contradiction to the common belief, Anderson localization of light cannot be achieved in a random three-dimensional ensemble of point scattering centers that is a paradigm model to study multiple scattering of waves. This suggests that fully disordered systems are not suitable for observation of Anderson localization of light and casts doubt on the very possibility of this phenomenon for light in any three-dimensional medium without sufficient structural correlations.
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