Phys. Rev. A 68, 043618 (2003) [14 pages]Decoherence of cold atomic gases in magnetic microtrapsReceived 13 May 2003; published 15 October 2003 We derive a model to describe decoherence of atomic clouds in atom-chip traps taking the excited states of the trapping potential into account. We use this model to investigate decoherence for a single trapping well and for a pair of trapping wells that form the two arms of an atom interferometer. Including the discrete spectrum of the trapping potential gives rise to a decoherence mechanism with a decoherence rate Γ that scales like Γ∼1/r04 with the distance r0 from the trap minimum to the wire. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.68.043618
DOI:
10.1103/PhysRevA.68.043618
PACS:
03.75.Dg, 03.75.Gg, 03.65.Yz
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