KIP-Veröffentlichungen

Jahr 2012
Autor(en) F. Jendrzejewski, A. Bernard, K. Müller, P. Cheinet, V. Josse, M. Piraud, L. Pezz\'e, L. Sanchez-Palencia, A. Aspect, P. Bouyer
Titel Three-dimensional localization of ultracold atoms in an optical disordered potential
KIP-Nummer HD-KIP 12-150
KIP-Gruppe(n) F21
Dokumentart Paper
Keywords (angezeigt) IOGS
Quelle Nature Physics
doi 10.1038/NPHYS2256
Abstract (de)

In disordered media, quantum interference effects are expected to induce complete suppression of electron conduction. The phenomenon, known as Anderson localization, has a counterpart with classical waves that has been observed in acoustics, electromagnetism and optics, but a direct observation for particles remains elusive. Here, we report the observation of the three-dimensional localization of ultracold atoms in a disordered potential created by a speckle laser field.Aphenomenological analysis of our data distinguishes a localized component of the resulting density profile from a diffusive component. The observed localization cannot be interpreted as the classical trapping of particles with energy below the classical percolation threshold in the disorder, nor can it be understood as quantum trapping in local potential minima. Instead, our data are compatible with the self-consistent theory of Anderson localization tailored to our system, involving a heuristic energy shift that offers scope for future interpretation.

Abstract (en)

In disordered media, quantum interference effects are expected to induce complete suppression of electron conduction. The phenomenon, known as Anderson localization, has a counterpart with classical waves that has been observed in acoustics, electromagnetism and optics, but a direct observation for particles remains elusive. Here, we report the observation of the three-dimensional localization of ultracold atoms in a disordered potential created by a speckle laser field.Aphenomenological analysis of our data distinguishes a localized component of the resulting density profile from a diffusive component. The observed localization cannot be interpreted as the classical trapping of particles with energy below the classical percolation threshold in the disorder, nor can it be understood as quantum trapping in local potential minima. Instead, our data are compatible with the self-consistent theory of Anderson localization tailored to our system, involving a heuristic energy shift that offers scope for future interpretation.

bibtex
@article{Jendrzejewski2012a,
  author   = {Jendrzejewski, Fred and Bernard, Alain and M{\"{u}}ller, Kilian and Cheinet, Patrick and Josse, Vincent and Piraud, Marie and Pezz{\'{e}}, Luca and Sanchez-Palencia, Laurent and Aspect, Alain and Bouyer, Philippe},
  title    = {{Three-dimensional localization of ultracold atoms in an optical disordered potential}},
  journal  = {Nature Physics},
  year     = {2012},
  volume   = {8},
  number   = {March},
  pages    = {398},
  doi      = {10.1038/NPHYS2256},
  url      = {http://www.nature.com/nphys/journal/vaop/ncurrent/full/nphys2256.html}
}
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URL Jendrzejewski2012a
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