1. Experimental observation of superdiffusive transport in random dimer lattices.
- Author
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Naether, U., Stützer, S., Vicencio, R. A., Molina, M. I., Tünnermann, A., Nolte, S., Kottos, T., Christodoulides, D. N., and Szameit, A.
- Subjects
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WAVE packets , *ANDERSON model , *WAVEGUIDES , *DIMERS , *ARBITRARY constants - Abstract
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 ε1 and ε2. The correlations enforce the creation of dimers, i.e. two adjacent waveguides with the same ε, 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. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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