Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 46: Ultra-cold atoms, ions and BEC V
Q 46.6: Vortrag
Donnerstag, 17. März 2011, 11:45–12:00, BAR 106
Continuous Loading of a Conservative Trap from an Atomic Beam — •Markus Falkenau1, Valentin Volchkov1, Jahn Rührig1, Axel Griesmaier1,2, and Tilman Pfau1 — 15. Physikalisches Institut, Universität Stuttgart, Germany — 2Niels-Bohr Insitute, Copenhagen, Denmark
We present results on the fast accumulation of 52Cr atoms in a conservative potential from a magnetically guided atomic beam. Without laser cooling on a cycling transition, a single dissipative step realized by optical pumping allows to load atoms at a rate of 2 · 107s−1 in the trap. Within less than 100 ms we reach the collisionally dense regime, from which we directly produce a Bose-Einstein condensate with subsequent evaporative cooling. This constitutes a new approach to degeneracy where, provided a slow beam of particles can be produced by some means, Bose-Einstein condensation can be reached for species without a cycling transition.