Disorder Potentials near Lithographically Fabricated Atom Chips

Details Disorder Potentials near Lithographically Fabricated Atom Chips Disorder Potentials near Lithographically Fabricated Atom Chips

2005-04-26

arxiv.org/abs/cond-mat/0504686v1

Phys. Rev. A 76, 063621 (2007)

Physics

Condensed Matter

Other Condensed Matter

submitted on September 24th, 2004

Scientific paper

10.1103/PhysRevA.76.063621

We show that previously observed large disorder potentials in magnetic microtraps for neutral atoms are reduced by about two orders of magnitude when using atom chips with lithographically fabricated high quality gold layers. Using one dimensional Bose-Einstein condensates, we probe the remaining magnetic field variations at surface distances down to a few microns. Measurements on a 100 um wide wire imply that residual variations of the current flow result from local properties of the wire.

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