Dynamics of dense two-component soliton trains in an elongated Bose-Einstein condensate

ORAL

Abstract

Solitons are a hallmark of nonlinear dynamics in Bose-Einstein condensates. While the dynamics of individual solitons and of small clusters have been extensively studied, our experiments are now reaching the regime of dense trains of interacting solitons. We employ a phase winding technique to prepare regular arrays of dark-bright solitons which exhibit surprisingly rich mean-field dynamics over the relatively long lifetime of these configurations. These dynamics are observed in real space then characterized through Fourier methods. The time evolution of spectral features is then compared against detailed numerical simulations. Understanding the dynamics of these structured quantum fluids has applications in benchmarking theoretical models for quantum hydrodynamics simulations and can provide an alternative viewpoint on the physics of supersolids.

*We gratefully acknowledge funding from NSF under grant numbers PHY-1912540 and DMS-2110030.

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Presenters

  • Sean Mossman

    • Washington State Univ
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA

Authors

  • Sean Mossman

    • Washington State Univ
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA

  • Garyfallia Katsimiga

    • University of Hamburg

  • Simeon I Mistakidis

    • Harvard - Smithsonian Center for Astrophysics
    • ITAMP, Center for Astrophysics, Harvard University
    • Harvard-Smithsonian Center for Astrophysics
    • University of Hamburg

  • Alejandro Romero Ros

    • University of Hamburg

  • Panagiotis Kevrekidis

    • University of Massachusetts Amherst
    • University of Massachusetts, Amherst

  • Peter W Engels

    • Washington State University
    • Washington State Univ
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA