Enhanced distribution of a wave-packet in lattices with disorder and nonlinearity

被引：15

作者：

Naether, Uta ^{[1
,2
]}

Rojas-Rojas, Santiago ^{[1
,2
]}

Martinez, Alejandro J. ^{[1
,2
]}

Stuetzer, Simon ^{[3
]}

Tuennermann, Andreas ^{[3
]}

Nolte, Stefan ^{[3
]}

Molina, Mario I. ^{[1
,2
]}

Vicencio, Rodrigo A. ^{[1
,2
]}

Szameit, Alexander ^{[3
]}

机构：

[1] Univ Chile, Fac Ciencias, Dept Fis, MSI Nucleus Adv Opt, Santiago, Chile

[2] Univ Chile, Fac Ciencias, Ctr Opt & Photon CEFOP, Santiago, Chile

[3] Univ Jena, Abbe Ctr Photon, Inst Appl Phys, D-07743 Jena, Germany

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 01期

关键词：

ANDERSON LOCALIZATION; TRANSPORT;

D O I：

10.1364/OE.21.000927

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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). (C) 2013 Optical Society of America

引用

页码：927 / 934

页数：8

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