Decoherence of cold atomic gases in magnetic micro-traps

Abstract

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.

15 pages, 10 figures, submitted to Phys. Rev. A

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Cited by in corpus (10)

• Physics with Coherent Matter Waves
• Adiabatic radio frequency potentials for the coherent manipulation of matter waves
• Intrinsic dephasing in one dimensional ultracold atom interferometers
• Derivation of Markovian master equations for spatially correlated decoherence
• Classical aspects of ultracold atom wavepacket motion through microstructured waveguide bends
• Loss of quantum coherence in a system coupled to a zero-temperature environment
• Nanoscale atomic waveguides with suspended carbon nanotubes
• Suppression and enhancement of decoherence in an atomic Josephson junction
• Decoherence in quantum cavities: Environmental erasure of carpet-type structures
• Material Science for Quantum Computing with Atom Chips