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Optics Letters

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  • Vol. 29, Iss. 18 — Sep. 15, 2004
  • pp: 2145–2147

Atom fiber for omnidirectional guiding of cold neutral atoms

X. Luo, P. Krüger, K. Brugger, S. Wildermuth, H. Gimpel, M. W. Klein, S. Groth, R. Folman, I. Bar-Joseph, and J. Schmiedmayer  »View Author Affiliations


Optics Letters, Vol. 29, Issue 18, pp. 2145-2147 (2004)
http://dx.doi.org/10.1364/OL.29.002145


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Abstract

We present an omnidirectional matter waveguide on an atom chip. The guide is based on a combination of two current-carrying wires and a bias field pointing perpendicular to the chip surface. Thermal atoms are guided for more than two complete turns along a 25-mm-long spiral path (with curve radii as short as 200 µm) at various atom-surface distances (35–450 µm). An extension of the scheme for the guiding of Bose–Einstein condensates is outlined.

© 2004 Optical Society of America

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping

Citation
X. Luo, P. Krüger, K. Brugger, S. Wildermuth, H. Gimpel, M. W. Klein, S. Groth, R. Folman, I. Bar-Joseph, and J. Schmiedmayer, "Atom fiber for omnidirectional guiding of cold neutral atoms," Opt. Lett. 29, 2145-2147 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-18-2145


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References

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  10. The images are taken by exposing the atoms to a flash (100ms) of near-resonant laser light.To avoid any disturbing reflections, the light enters the chamber from two directions parallel to the chip surface.
  11. The clouds exhibit an anisotropic temperature profile (450mK in the transverse and 50mK in the longitudinal directions) due to a transverse compression during the loading without rethermalization.
  12. By running a parallel current through another wire on the chip, we could even enhance this pushing effect.
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