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Lookup NU author(s): Holly Middleton-Spencer,
Professor Nick ParkerORCiD,
Dr Luca Galantucci,
Professor Carlo Barenghi
This is the authors' accepted manuscript of an article that has been published in its final definitive form by Institute of Physics Publishing Ltd., 2021.
For re-use rights please refer to the publisher's terms and conditions.
We present a method to detect the presence and depth of dark solitons within repulsive one-dimensional harmonically trapped Bose-Einstein condensates. For a system with one soliton, we provide numerical evidence that the shift of the density in Fourier space directly maps onto the depth of the soliton. For multi-soliton systems, combining our spectral method with established imaging techniques, the character of the solitons present in the condensate can be determined. We verify that the detection of solitons by the spectral shift works in the presence of waves induced by density engineering methods. Finally we discuss implications for vortex detection in three-dimensional Bose-Einstein condensates.
Author(s): Middleton-Spencer HAJ, Parker NG, Galantucci L, Barenghi CF
Publication type: Article
Publication status: Published
Journal: Europhysics Letters
Online publication date: 05/03/2021
Acceptance date: 08/02/2021
Date deposited: 07/04/2021
ISSN (electronic): 1286-4854
Publisher: Institute of Physics Publishing Ltd.
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