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Q: Fachverband Quantenoptik und Photonik
Q 55: Poster III
Q 55.18: Poster
Donnerstag, 5. März 2009, 16:30–19:00, VMP 8 Foyer
Delocalization of atoms in a disorder potential due to spontaneous emission — •Boris Nowak1,2, Peter Schlagheck1, Jami Kinnunen2,3, and Murray J. Holland2 — 1Institut für Theoretische Physik, Universität Regensburg — 2JILA, University of Colorado at Boulder — 3Department of Engineering Physics, Helsinki University of Technology
Recently two groups have reported on the observation of Anderson localization of Bose-Einstein condensates in a one dimensional disorder potential [1,2]. This effect is caused by the coherent wave nature of atoms and is therefore significantly altered by a dissipative process such as spontaneous emission. We report on our studies of a near resonantly driven two level atom subject to an external disorder potential. To this end we numerically compute the master equation evolution for the reduced density matrix by employing the Monte Carlo wavefunction method [3]. We particularly focus on the influence of spontaneous emission onto the time dependent expansion process of the atomic wave packet in a disorder potential.
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