The role of wire imperfections in micro magnetic traps for atoms

We present a quantitative study of roughness in the magnitude of the magnetic fieldproduced by a current carrying microwire, i.e. in the trapping potential for paramagnetic atoms.We show that this potential roughness arises from deviations in the wire current flow due to geometric fluctuations of th...

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Bibliographic Details
Published in:arXiv.org 2004-07
Main Authors: Esteve, Jerome, Aussibal, Christine, Schumm, Thorsten, Figl, Cristina, Mailly, Dominique, Bouchoule, Isabelle, Westbrook, Christopher, Aspect, Alain
Format: Article
Language:English
Subjects:
Cold traps
Roughness
Variations
Wire
Online Access:Get full text
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Summary:We present a quantitative study of roughness in the magnitude of the magnetic fieldproduced by a current carrying microwire, i.e. in the trapping potential for paramagnetic atoms.We show that this potential roughness arises from deviations in the wire current flow due to geometric fluctuations of the edges of the wire : a measurement of the potentialusing cold trapped atoms agrees with the potential computed from the measurement of the wire edge roughness by a scanning electronmicroscope.
ISSN:2331-8422
DOI:10.48550/arxiv.0403020