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
Naether, U.; Stützer, S.; Vicencio, R. A.; Molina, M. I.; Tünnermann, A.; Nolte, S.; Kottos, T.; Christodoulides, D. N.; and Szameit, A., "Experimental observation of superdiffusive transport in random dimer lattices" (2013). Faculty Bibliography 2010s. 4452.