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Micron-sized atom traps made from magneto-optical thin films

S. Eriksson·F. Ramirez-Martinez·E. A. Curtis·B. E. Sauer·P. W. Nutter·E. W. Hill·E. A. Hinds
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Abstract

We have produced magnetic patterns suitable for trapping and manipulating neutral atoms on a $1 μ$m length scale. The required patterns are made in Co/Pt thin films on a silicon substrate, using the heat from a focussed laser beam to induce controlled domain reversal. In this way we draw lines and "paint" shaped areas of reversed magnetization with sub-micron resolution. These structures produce magnetic microtraps above the surface that are suitable for holding rubidium atoms with trap frequencies as high as ~1 MHz.

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S. Eriksson, F. Ramirez-Martinez, E. A. Curtis, B. E. Sauer, P. W. Nutter, E. W. Hill, E. A. Hinds. 2004-06-21. Micron-sized atom traps made from magneto-optical thin films. https://doi.org/10.1007/s00340-004-1655-7

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