Experimental observation of superdiffusive transport in random dimer lattices
Abbreviated Journal Title
New J. Phys.
ANDERSON LOCALIZATION; CORRELATED DISORDER; ABSENCE; LIGHT; MODEL; DELOCALIZATION; SYSTEMS; STATES; Physics, Multidisciplinary
We experimentally observe anomalous wavepacket evolution in a realization of a one-dimensional finite binary Anderson model in the presence of short-range correlations. To this end, we employ weakly-coupled optical waveguides with propagation constants epsilon(1) and epsilon(2). The correlations enforce the creation of dimers, i.e. two adjacent waveguides with the same epsilon, randomly placed along the lattice. A transition from a ballistic to a superdiffusive wavepacket expansion and, eventually, to localization is observed as the contrast between the two propagation constants increases.
New Journal of Physics
"Experimental observation of superdiffusive transport in random dimer lattices" (2013). Faculty Bibliography 2010s. 4452.