Decoherence of Bose-Einstein condensates in microtraps
Carsten Henkel, Simon A. Gardiner
TL;DR
This paper investigates how thermal near fields affect the coherence of Bose-Einstein condensates in microtraps, showing that atom interactions can slow decoherence, supported by simulations and theoretical analysis.
Contribution
It introduces a combined simulation and theoretical approach to understand decoherence mechanisms in microtrap condensates, highlighting the role of atom interactions.
Findings
Atom interactions can slow decoherence in microtraps.
Monte Carlo simulations align with kinetic two-component theory.
A simple theory based on the condensate dynamic structure factor explains the results.
Abstract
We discuss the impact of thermally excited near fields on the coherent expansion of a condensate in a miniaturized electromagnetic trap. Monte Carlo simulations are compared with a kinetic two-component theory and indicate that atom interactions can slow down decoherence. This is explained by a simple theory in terms of the condensate dynamic structure factor.
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