Micron-sized atom traps made from magneto-optical thin films |
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Authors: | S Eriksson F Ramirez-Martinez EA Curtis BE Sauer PW Nutter EW Hill EA Hinds |
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Institution: | (1) Blackett Laboratory, Imperial College, London, SW7 2BW, UK;(2) Department of Computer Science, University of Manchester, Manchester, M13 9PL, UK |
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Abstract: | We have produced magnetic patterns suitable for trapping and manipulating neutral atoms on a 1- m length scale. The required patterns are made in Co/Pt thin films on a silicon substrate, using the heat from a focused laser beam to induce controlled domain reversal. In this way we draw lines and paint shaped areas of reversed magnetisation 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. PACS 39.25.+k; 03.75.Be; 75.50.Ss; 75.70.-i |
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