Re-shaping Bose-Einstein condensates with complex light for atomic persistent currents and trapping

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Abstract

We numerically model the propagation of far-detuned optical beams through a Bose-Einstein condensate (BEC) using coupled nonlinear Schrödinger and Gross-Pitaevskii equations. For red atom-field detuning, we show that light carrying orbital angular momentum (OAM) can lead to coupled light-atom solitons carrying angular momentum. We demonstrate the formation of azimuthally rotating wavepackets, toward an atomic persistent current without trapping requirements. For blue atom-field detuning, we show highly exotic BEC distributions, with the atoms trapped in dark regions of the optical field. Our results provide a novel means of atomic transport and of sculpting a BEC into unique transverse distributions.
Original languageEnglish
Title of host publicationProceedings of SPIE Complex Light and Optical Forces XVII
EditorsDavid L. Andrews, Enrique J. Galvez, Halina Rubinsztein-Dunlop
Place of PublicationBellingham, WA
Number of pages5
Volume12436
ISBN (Electronic)9781510659780
DOIs
Publication statusPublished - 17 Apr 2023

Keywords

  • optical beams
  • atomic transport
  • orbital angular momentum

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