Coherent forward scattering in two-dimensional disordered systems

doi:https://doi.org/10.1103/physreva.90.063602

Open AccessArticle10.1103/physreva.90.063602

Coherent forward scattering in two-dimensional disordered systems

Sanjib Ghosh,Nicolas Cherroret,Benoît Grémaud,Christian Miniatura,Dominique Delande-2014-12-01-Physical Review A

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TL;DRAbstract

We present a detailed numerical and theoretical analysis of the recently discovered phenomenon of coherent forward scattering. This effect manifests itself as a macroscopic interference peak in the forward direction of the momentum distribution of a matter wave launched with finite velocity in a random potential. Focusing on the two-dimensional case, we show that coherent forward scattering generally arises due the confinement of the wave in a finite region of space, and explain under which conditions it can be seen as a genuine signature of Anderson localization.

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We present a detailed numerical and theoretical analysis of the recently discovered phenomenon of coherent forward scattering. This effect manifests itself as a macroscopic interference peak in the forward direction of the momentum distribution of a matter wave launched with finite velocity in a random potential. Focusing on the two-dimensional case, we show that coherent forward scattering generally arises due the confinement of the wave in a finite region of space, and explain under which conditions it can be seen as a genuine signature of Anderson localization.

Keywords

ScatteringPhysicsForward scatterMomentum (technical analysis)Interference (communication)Matter waveAnderson localizationPosition and momentum space

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