Berlin 2005 – wissenschaftliches Programm
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Q: Quantenoptik und Photonik
Q 13: Quanteneffekte I
Q 13.6: Vortrag
Samstag, 5. März 2005, 09:45–10:00, HU 1072
Multiple Scattering of Cold Atoms in Speckle Potentials — •Robert Kuhn1,2, Cord Axel Müller1, and Christian Miniatura2 — 1Physikalisches Institut, Universität Bayreuth, D-95440 Bayreuth — 2Institut Non Linéaire de Nice Sophia Antipolis, F-06560 Valbonne
We study multiple scattering of matter waves by a disordered optical potential in two and in three dimensions. Using a diagrammatic Green’s function approach it is possible to calculate the ensemble-averaged propagator and the intensity kernel in the weak scattering regime. From the single-scattering vertex we obtain the scattering mean free path and the transport mean free path as a function of experimentally relevant parameters. We observe strongly anisotropic scattering due to the presence of correlations between potential fluctuations of the optical speckle pattern. Furthermore we will discuss the interplay between the different physical regimes which impose important constraints upon the simultaneous realization of multiple scattering, weak scattering and elastic scattering.