Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 3: Quantum Gases: Bosons I

Q 3.2: Talk

Monday, March 8, 2010, 14:15–14:30, E 001

Anderson Localization of Solitons — Krzysztof Sacha^1,2, •Cord A. Müller^2,3, Dominique Delande², and Jakub Zakrzewski¹ — ¹Uniwersytet Jagielloński, Kraków, Poland — ²Laboratoire Kastler-Brossel, Paris, France — ³Physikalisches Institut, Universität Bayreuth, Germany

At low temperature, a quasi-one-dimensional ensemble of atoms with an attractive interaction forms a bright soliton. When exposed to a weak and smooth external potential, the shape of the soliton is hardly modified, but its center-of-mass motion is affected. We show that in a spatially correlated disordered potential, the quantum motion of a bright soliton displays Anderson localization. The localization length can be much larger than the soliton size and could be observed experimentally.

[1] K. Sacha et al., PRL 103, 210402 (2009)