Suppression of Transport of an Interacting Elongated Bose-Einstein Condensate in a Random Potential
David Cl\'ement (LCFIO), Andr\`es F. Varon (LCFIO), Mathilde Hugbart, (LCFIO), Jocelyn Retter (LCFIO), Philippe Bouyer (LCFIO), Laurent, Sanchez-Palencia (LCFIO), Dimitri M. Gangardt (LPTMS), Georgy V. Shlyapnikov, (LPTMS), Alain Aspect (LCFIO)
TL;DR
This paper investigates how interactions in an elongated Bose-Einstein condensate lead to suppressed transport in a weak random potential, supported by experimental observations and numerical simulations.
Contribution
It demonstrates disorder-induced trapping of an interacting BEC in a weak random potential, combining experimental data with Gross-Pitaevskii simulations.
Findings
Transport suppression observed in experiments
Numerical simulations match experimental results
Proposed disorder-induced trapping mechanism
Abstract
We observe the suppression of the 1D transport of an interacting elongated Bose-Einstein condensate in a random potential with a standard deviation small compared to the typical energy per atom, dominated by the interaction energy. Numerical solutions of the Gross-Pitaevskii equation reproduce well our observations. We propose a scenario for disorder-induced trapping of the condensate in agreement with our observations.
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