A class of permanent magnetic lattices for ultracold atoms

We report on a class of configurations of permanent magnets on an atom chip for producing 1D and 2D periodic arrays of magnetic microtraps with non-zero potential minima and variable barrier height for trapping and manipulating ultracold atoms and quantum degenerate gases. We present analytical expr...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2007-03, Vol.40 (6), p.1283-1294
Main Authors: Ghanbari, Saeed, Kieu, Tien D, Hannaford, Peter
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Atomic properties and interactions with photons
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Matter waves
Optical cooling of atoms
trapping
Photon interactions with atoms
Physics
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Summary:We report on a class of configurations of permanent magnets on an atom chip for producing 1D and 2D periodic arrays of magnetic microtraps with non-zero potential minima and variable barrier height for trapping and manipulating ultracold atoms and quantum degenerate gases. We present analytical expressions for an infinite magnetic lattice for the relevant physical quantities and compare them with our numerical results. In one of the configurations of permanent magnets, we show how it is possible by changing the angle between the crossed periodic arrays of magnets to go from a 1D array of 2D microtraps to a 2D array of 3D microtraps and thus to continuously vary the barrier heights between the microtraps.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/40/6/018