Spinor dynamics in an antiferromagnetic spin-1 thermal bose gas

H. K. Pechkis, Jonathan P. Wrubel, A. Schwettmann, P. F. Griffin, R. Barnett, E. Tiesinga, P. D. Lett

Research output: Contribution to journalArticle

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Abstract

We present experimental observations of coherent spin-population oscillations in a cold thermal, Bose gas of spin-1 Na23 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.

Original languageEnglish
Article number025301
JournalPhysical Review Letters
Volume111
Issue number2
DOIs
StatePublished - Jul 9 2013

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gases
oscillations
Bose-Einstein condensates
damping
momentum
coefficients
magnetic fields
atoms
interactions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Pechkis, H. K., Wrubel, J. P., Schwettmann, A., Griffin, P. F., Barnett, R., Tiesinga, E., & Lett, P. D. (2013). Spinor dynamics in an antiferromagnetic spin-1 thermal bose gas. Physical Review Letters, 111(2), [025301]. https://doi.org/10.1103/PhysRevLett.111.025301

Spinor dynamics in an antiferromagnetic spin-1 thermal bose gas. / Pechkis, H. K.; Wrubel, Jonathan P.; Schwettmann, A.; Griffin, P. F.; Barnett, R.; Tiesinga, E.; Lett, P. D.

In: Physical Review Letters, Vol. 111, No. 2, 025301, 09.07.2013.

Research output: Contribution to journalArticle

Pechkis, HK, Wrubel, JP, Schwettmann, A, Griffin, PF, Barnett, R, Tiesinga, E & Lett, PD 2013, 'Spinor dynamics in an antiferromagnetic spin-1 thermal bose gas', Physical Review Letters, vol. 111, no. 2, 025301. https://doi.org/10.1103/PhysRevLett.111.025301
Pechkis HK, Wrubel JP, Schwettmann A, Griffin PF, Barnett R, Tiesinga E et al. Spinor dynamics in an antiferromagnetic spin-1 thermal bose gas. Physical Review Letters. 2013 Jul 9;111(2). 025301. https://doi.org/10.1103/PhysRevLett.111.025301
Pechkis, H. K. ; Wrubel, Jonathan P. ; Schwettmann, A. ; Griffin, P. F. ; Barnett, R. ; Tiesinga, E. ; Lett, P. D. / Spinor dynamics in an antiferromagnetic spin-1 thermal bose gas. In: Physical Review Letters. 2013 ; Vol. 111, No. 2.
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