Fast long-distance transport of cold cesium atoms
- URL: http://arxiv.org/abs/2109.03804v1
- Date: Wed, 8 Sep 2021 17:45:02 GMT
- Title: Fast long-distance transport of cold cesium atoms
- Authors: Till Klostermann, Cesar R. Cabrera, Hendrik von Raven, Julian F.
Wienand, Christian Schweizer, Immanuel Bloch, Monika Aidelsburger
- Abstract summary: Transporting cold atoms between distant sections of a vacuum system is a central ingredient in many quantum simulation experiments.
We demonstrate optical transport of cold cesium atoms over a total transfer distance of about $43,$cm in less than $30,$ms.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Transporting cold atoms between distant sections of a vacuum system is a
central ingredient in many quantum simulation experiments, in particular in
setups, where a large optical access and precise control over magnetic fields
is needed. In this work, we demonstrate optical transport of cold cesium atoms
over a total transfer distance of about $43\,$cm in less than $30\,$ms. The
high speed is facilitated by a moving lattice, which is generated via the
interference of a Bessel and a Gaussian laser beam. We transport about $3\times
10^6$ atoms at a temperature of a few $\mu$K with a transport efficiency of
about $75\%$. We provide a detailed study of the transport efficiency for
different accelerations and lattice depths and find that the transport
efficiency is mainly limited by the potential depth along the direction of
gravity. To highlight the suitability of the optical-transport setup for
quantum simulation experiments, we demonstrate the generation of a pure
Bose-Einstein condensate with about $2\times 10^4$ atoms. We find a robust
final atom number within $2\%$ over a duration of $2.5\,$h with a standard
deviation of $<5\%$ between individual experimental realizations.
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