title: Enhanced distribution of a wave-packet in lattices with disorder and nonlinearity.
abstract: We show, numerically and experimentally, that the presence of weak disorder results in an enhanced energy distribution of an initially localized wave-packet, in one- and two-dimensional finite lattices. The addition of a focusing nonlinearity facilitates the spreading effect even further by increasing the wave-packet effective size. We find a clear transition between the regions of enhanced spreading (weak disorder) and localization (strong disorder).
authors: Departamento de Física, MSI-Nucleus on Advanced Optics, and Center for Optics and Photonics (CEFOP), Facultad de Ciencias, Universidad de Chile, Santiago, Chile.
authors: Uta
authors: U
authors: Naether
authors: Santiago
authors: S
authors: Rojas-Rojas
authors: Alejandro J
authors: AJ
authors: Martínez
authors: Simon
authors: S
authors: Stützer
authors: Andreas
authors: A
authors: Tünnermann
authors: Stefan
authors: S
authors: Nolte
authors: Mario I
authors: MI
authors: Molina
authors: Rodrigo A
authors: RA
authors: Vicencio
authors: Alexander
authors: A
authors: Szameit