Measurement of the angular momentum of a rotating Bose-Einstein condensate

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dc.creatorChevy, F.
dc.creatorMadison, K.
dc.creatorDalibard, J.
dc.date2000-05-12
dc.date.accessioned2026-07-07T12:40:43Z
dc.date.available2026-07-07T12:40:43Z
dc.descriptionWe study the quadrupole oscillation of a Bose-Einstein condensate of $^{87}$Rb atoms confined in an axisymmetric magnetic trap, after it has been stirred by an auxiliary laser beam. The stirring may lead to the nucleation of one or more vortices, whose presence is revealed unambiguously by the precession of the axes of the quadrupolar mode. For a stirring frequency $Ω$ below the single vortex nucleation threshold $Ω_c$, no measurable precession occurs. Just above $Ω_c$, the angular momentum deduced from the precession is $\sim \hbar$. For stirring frequencies above $Ω_c$ the angular momentum is a smooth and increasing function of $Ω$, until an angular frequency $Ω_c'$ is reached at which the vortex lattice disappears and the precession stops.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0005221
dc.identifierhttp://arxiv.org/abs/cond-mat/0005221
dc.identifierPhys.Rev.Lett.85:2223-2227,2000
dc.identifierdoi:10.1103/PhysRevLett.85.2223
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219525
dc.subjectSoft Condensed Matter
dc.subjectMesoscale and Nanoscale Physics
dc.titleMeasurement of the angular momentum of a rotating Bose-Einstein condensate
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