J. Phys. IV France
Volume 116, October 2004
Page(s) 247 - 252

J. Phys. IV France 116 (2004) 247-252

DOI: 10.1051/jp4:2004116013

Loading a dressed Zeeman trap with cold atoms

Y. Colombe, B. Mercier, H. Perrin and V. Lorent

Laboratoire de physique des lasers, Université Paris 13, 99 Av. J.-B. Clément, 93430 Villetaneuse, France

In this paper we report on our progress towards the realization of a quantum degenerate gas in two dimensions. Our goal is to transfer a BEC of 87Rb in a very anisotropic trap with oscillation frequencies $\omega_{\rm trans} \gg \omega_1, \omega_2$. Several schemes of such a trap exist. We focused our attention on the proposal of Oliver Zobay and Barry Garraway published in 2001 [1]. The atoms first condensed in a Ioffe-Pritchard trap are dressed with a radio-frequency field and trapped at an iso-B surface surrounding the center of the magnetic trap. The anisotropy of the rf dressed trap stems from two different physical aspects: $\omega_{\rm trans}$ is built out of the magnetic field gradient and the rf coupling strength, while $\omega_1$ and $\omega_2$ are given by the curvature of the iso-B surface and gravity. This paper presents the characteristics of this trap loaded with ultracold atoms.

© EDP Sciences 2004