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

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

2004-06-21

arxiv.org/abs/cond-mat/0406482v1

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 7 figures

Scientific paper

10.1007/s00340-004-1655-7

We have produced magnetic patterns suitable for trapping and manipulating neutral atoms on a $1 \mu$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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