Spinor dynamics in an antiferromagnetic spin-1 thermal bose gas

Pechkis, Hyewon and Wrubel, Jonathan and Schwettmann, Arne and Griffin, Paul and Barnett, Ryan and Tiesinga, Eite and Lett, Paul (2013) Spinor dynamics in an antiferromagnetic spin-1 thermal bose gas. Physical Review Letters, 111 (2). 025301. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.111.025301)

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Abstract

We present experimental observations of coherent spin-population oscillations in a cold thermal, Bose gas of spin-1 23Na atoms. The population oscillations in a multi-spatial-mode thermal gas have the same behavior as those observed in a single-spatial-mode antiferromagnetic spinor Bose-Einstein condensate. We demonstrate this by showing that the two situations are described by the same dynamical equations, with a factor of 2 change in the spin-dependent interaction coefficient, which results from the change to particles with distinguishable momentum states in the thermal gas. We compare this theory to the measured spin population evolution after times up to a few hundreds of ms, finding quantitative agreement with the amplitude and period. We also measure the damping time of the oscillations as a function of magnetic field.

ORCID iDs

Pechkis, Hyewon, Wrubel, Jonathan, Schwettmann, Arne, Griffin, Paul ORCID logoORCID: https://orcid.org/0000-0002-0134-7554, Barnett, Ryan, Tiesinga, Eite and Lett, Paul;
  • Item type:Article
    ID code:44344
    Dates:
    Date
    Event
    9 July 2013
    Published
    Notes:http://arxiv.org/abs/1306.4255
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:17 Jul 2013 11:52
    Last modified:11 Nov 2024 10:26
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/44344
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