A lattice of microtraps for ultracold atoms based on patterned magnetic films

Details A lattice of microtraps for ultracold atoms based on patterned magnetic films A lattice of microtraps for ultracold atoms based on patterned magnetic films

2007-06-08

arxiv.org/abs/0706.1170v2

Phys. Rev. A 76, 033408 (2007)

Physics

Atomic Physics

7 pages, 7 figures

Scientific paper

10.1103/PhysRevA.76.033408

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.

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