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, and R. J. C. Spreeuw
Phys. Rev. A 76, 033408 – Published 19 September 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 300nm magnetized layer of FePt, patterned using optical lithography. Our magnetic lattice consists of more than 15 000 tightly confining microtraps with a density of 1250trapsmm2. 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 10μm from the film surface. The present result is an important first step toward quantum information processing with neutral atoms in magnetic lattice potentials.

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  • Received 8 June 2007

DOI:https://doi.org/10.1103/PhysRevA.76.033408

©2007 American Physical Society

Authors & Affiliations

R. Gerritsma1, S. Whitlock1, T. Fernholz1, H. Schlatter1, J. A. Luigjes1, J.-U. Thiele2, J. B. Goedkoop1, and R. J. C. Spreeuw1

  • 1Van der Waals-Zeeman Institute, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands
  • 2San Jose Research Center, Hitachi Global Storage Technologies, 650 Harry Road, San Jose, California 95120, USA

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Issue

Vol. 76, Iss. 3 — September 2007

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