Band Gaps for Atoms in Light based Waveguides

Details Band Gaps for Atoms in Light based Waveguides Band Gaps for Atoms in Light based Waveguides

1995-10-10

arxiv.org/abs/atom-ph/9510003v2

Physics

Atomic Physics

7 pages, four postscript figures, uses revtex.sty, available through http://online.anu.edu.au/Physics/papers/atom.html

Scientific paper

10.1103/PhysRevA.53.3449

The energy spectrum for a system of atoms in a periodic potential can exhibit a gap in the band structure. We describe a system in which a laser is used to produce a mechanical potential for the atoms, and a standing wave light field is used to shift the atomic levels using the Autler-Townes effect, which produces a periodic potential. The band structure for atoms guided by a hollow optical fiber waveguide is calculated in three dimensions with quantised external motion. The size of the band gap is controlled by the light guided by the fiber. This variable band structure may allow the construction of devices which can cool atoms. The major limitation on this device would be the spontaneous emission losses.

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