Physics – Quantum Physics
Scientific paper
2003-05-13
Phys. Rev. A 68, 043618 (2003).
Physics
Quantum Physics
15 pages, 10 figures, submitted to Phys. Rev. A
Scientific paper
10.1103/PhysRevA.68.043618
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 $\Gamma$ that scales like $\Gamma \sim 1/r_0^4$ with the distance $r_0$ from the trap minimum to the wire.
Belzig Wolfgang
Bruder Christoph
Schroll C.
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