Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 24: Quantum Gases: Opt. Lattice 1
Q 24.6: Vortrag
Mittwoch, 16. März 2011, 11:45–12:00, HSZ 02
Three-body losses and three-body correlations in one-dimensional systems — •Elmar Haller, Manfred J. Mark, Johann G. Danzl, Lukas Reichsöllner, Mohamed Rabie, Oliver Krieglsteiner, Andreas Klinger, and Hanns-Christoph Nägerl — Institut für Experimentalphysik und Zentrum für Quantenphysik, Universität Innsbruck, Technikerstrasse 25, A-6020 Innsbruck, Austria
We load a Bose-Einstein condensate of cesium atoms into an array of tube-like 1D traps generated by a 2D optical lattice potential, and we control the interaction strength by means of a 1D confinement-induced resonance [1]. Unlike for ultracold atoms in 3D geometry, which show a dramatic increase of three-body losses in the proximity of a Feshbach resonance, we observe a strong suppression of three-body losses in 1D. This suppression originates from a strong reduction of the three-body correlation function g3 at close distances in 1D. We find a reduction of g3 by several orders of magnitude for an increasing interaction parameter γ. The scaling of g3(γ) is compared to theoretical predictions [2]
[1] E. Haller, et al., Phys. Rev. Lett. 104 153203 (2010).
D. Gangardt, and G. Shlyapnikov, Phys. Rev. Lett. 90 10401 (2003).