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16 April 2024

» arxiv » arxiv.0706.1170

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A lattice of microtraps for ultracold atoms based on patterned magnetic films
R. Gerritsma ; S. Whitlock ; T. Fernholz ; H. Schlatter ; J. A. Luigjes ; J.-U. Thiele ; J. B. Goedkoop ; R. J. C. Spreeuw ;
Date:	8 Jun 2007
Abstract:	We have realized a two dimensional permanent magnetic lattice of Ioffe-Pritchard microtraps for ultracold atoms. The lattice is formed by a single 300 nm magnetized layer of FePt, patterned using optical lithography. Our magnetic lattice consists of more than 15000 tightly confining microtraps with a density of 1250 traps/mm$^2$. Simple analytical approximations for the magnetic fields produced by the lattice are used to derive relevant trap parameters. We load ultracold atoms into at least 30 lattice sites at a distance of approximately 10 $mu$m from the film surface. The present result is an important first step towards quantum information processing with neutral atoms in magnetic lattice potentials.
Source:	arXiv, arxiv.0706.1170
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