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

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.

arXiv comment7 pages, 7 figures

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Cited by in corpus (32)

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• One dimensional lattice of permanent magnetic microtraps for ultracold atoms on an atom chip
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• Sub-Poissonian atom number fluctuations by three-body loss in mesoscopic ensembles
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• Magnetic lattices for ultracold atoms and degenerate quantum gases
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• Dressing of Ultracold Atoms by their Rydberg States in a Ioffe-Pritchard Trap
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• Radiofrequency spectroscopy of a linear array of Bose-Einstein condensates in a magnetic lattice
• Spectral properties of finite laser-driven lattices of ultracold Rydberg atoms
• Deposition and patterning of magnetic atom trap lattices in FePt films with periods down to 200nm
• A Sawtooth Permanent Magnetic Lattice for Ultracold Atoms and BECs
• Feasibility of the optical fiber clock
• Sensitive Absorption Imaging of Single Atoms in Front of a Mirror
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• Control of Ultracold Atoms with a Chiral Ferromagnetic Film
• Novel, Retroreflective, Magneto-Optical Trap Near a Surface