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Open Quantum Systems Decoherence

Anderson localization and nonlinearity in one dimensional disordered photonic lattices

arXiv
Authors: Yoav Lahini, Assaf Avidan, Francesca Pozzi, Marc Sorel, Roberto Morandotti, Demetrios N. Christodoulides, Yaron Silberberg

Year

2007

Paper ID

50459

Status

Preprint

Abstract Read

~2 min

Abstract Words

109

Citations

N/A

Abstract

We experimentally investigate the evolution of linear and nonlinear waves in a realization of the Anderson model using disordered one dimensional waveguide lattices. Two types of localized eigenmodes, flat-phased and staggered, are directly measured. Nonlinear perturbations enhances localization in one type, and induce delocalization in the other. In a complementary approach, we study the evolution on short time scales of δ-like wavepackets in the presence of disorder. A transition from ballistic wavepacket expansion to exponential (Anderson) localization is observed. We find an intermediate regime in which the ballistic and localized components coexist while diffusive dynamics is absent. Evidence is found for a faster transition into localization under nonlinear conditions.

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  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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  • We experimentally investigate the evolution of linear and nonlinear waves in a realization of the Anderson model using disordered one dimensional waveguide lattices.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0704.3788 [2] arXiv https://arxiv.org/abs/0704.3788 [3] Publisher https://arxiv.org/abs/0704.3788

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