Title

Experimental observation of superdiffusive transport in random dimer lattices

Authors

Authors

U. Naether; S. Stutzer; R. A. Vicencio; M. I. Molina; A. Tunnermann; S. Nolte; T. Kottos; D. N. Christodoulides;A. Szameit

Comments

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Abbreviated Journal Title

New J. Phys.

Keywords

ANDERSON LOCALIZATION; CORRELATED DISORDER; ABSENCE; LIGHT; MODEL; DELOCALIZATION; SYSTEMS; STATES; Physics, Multidisciplinary

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 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.

Journal Title

New Journal of Physics

Volume

15

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

9

WOS Identifier

WOS:000313908800004

ISSN

1367-2630

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