Quasi-condensate growth on an atom chip

Abstract

We discuss and model an experiment to study quasi-condensate growth on an atom chip. In particular, we consider the addition of a deep dimple to the weak harmonic trap confining an ultracold one-dimensional atomic Bose gas, below or close to the characteristic temperature for quasi-condensate formation. The subsequent dynamics depends critically on both the initial conditions, and the form of the perturbing potential. In general, the dynamics features a combination of shock-wave propagation in the quasi-condensate, and quasi-condensate growth from the surrounding thermal cloud.

Detailed Discussion (11 Pages, 7 Fig), Classification of Accessible Regimes, Description of Experimental Techniques

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• Engineering Dark Solitary waves in Ring-Trap Bose-Einstein condensates
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• Persistent current formation in double-ring geometries
• Phase coherence in quasicondensate experiments: an ab initio analysis via the stochastic Gross-Pitaevskii equation
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• Periodic quenches across the Berezinskii-Kosterlitz-Thouless phase transition
• Stochastic longevity of a dark soliton in a finite-temperature Bose-Einstein condensate
• Beyond Gross-Pitaevskii Mean Field Theory
• Effect of Dimple Potential on Ultraslow Light in a Bose-Einstein Condensate