Decoherence of cold atomic gases in magnetic microtraps

Journal Article · Wed Oct 01 00:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.68.043618· OSTI ID:20640381

Schroll, C; Belzig, W; Bruder, C ^[1]

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1. Department of Physics and Astronomy, University of Basel, Klingelbergstrasse 82, CH-4056 Basel (Switzerland)

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}{approx}1/r{sub 0}{sup 4} with the distance r{sub 0} from the trap minimum to the wire.

• OSTI ID: 20640381
• Journal Information: Physical Review. A, Vol. 68, Issue 4; Other Information: DOI: 10.1103/PhysRevA.68.043618; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
DISTANCE
EXCITED STATES
GASES
INTERFEROMETERS
INTERFEROMETRY
IONS
POTENTIALS
RADIATION PRESSURE
TRAPPING
TRAPS