In situ imaging of vortices in Bose-Einstein condensates

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Wilson, Kali E. and Newman, Zachary L. and Lowney, Joseph D. and Anderson, Brian P. (2015) In situ imaging of vortices in Bose-Einstein condensates. Physical Review A - Atomic, Molecular, and Optical Physics, 91 (2). 023621. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.91.023621)

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Abstract

We present an application of dark-field imaging that enables in situ detection of two-dimensional vortex distributions in single-component Bose-Einstein condensates (BECs). By rotating a Rb87 BEC in a magnetic trap, we generate a triangular lattice of vortex cores in the BEC, with core diameters on the order of 400 nm and cores separated by approximately 9μm. We have experimentally confirmed that the positions of the vortex cores near the BEC center can be determined without the need for ballistic expansion of the BEC. Our imaging method should allow for the determination of arbitrary distributions of vortices and other superfluid density defects in cases where expansion of the BEC is either impractical or would significantly alter the physical characteristics and appearance of vortices or defects. Our method is also a step toward real-time measurements of complex two-dimensional vortex dynamics within a single BEC.

ORCID iDs

Wilson, Kali E. ORCID logoORCID: https://orcid.org/0000-0001-5683-8441, Newman, Zachary L., Lowney, Joseph D. and Anderson, Brian P.;
  • Item type:Article
    ID code:82264
    Dates:
    Date
    Event
    23 February 2015
    Published
    Notes:Publisher Copyright: © 2015 American Physical Society. Kali E. Wilson, Zachary L. Newman, Joseph D. Lowney, and Brian P. Anderson Phys. Rev. A 91, 023621
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:08 Sep 2022 09:53
    Last modified:11 Nov 2024 13:37
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/82264
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