Vortices in a stirred Bose-Einstein condensate

We stir with a focused laser beam a Bose-Einstein condensate of 87 Rb atoms confined in a magnetic trap. We observe the formation of a single vortex for a stirring frequency exceeding a critical value. At larger rotation frequencies we produce states of the condensate for which up to eleven vortices...

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Veröffentlicht in:	Journal of modern optics 2000-11, Vol.47 (14-15), p.2715-2723
Hauptverfasser:	Madison, K. W., Chevy, F., Wohlleben, W., Dalibard, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Classical and quantum physics: mechanics and fields Exact sciences and technology Matter waves Phase coherent atomic ensembles quantum condensation phenomena Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	We stir with a focused laser beam a Bose-Einstein condensate of 87 Rb atoms confined in a magnetic trap. We observe the formation of a single vortex for a stirring frequency exceeding a critical value. At larger rotation frequencies we produce states of the condensate for which up to eleven vortices are simultaneously present. We present measurements of the decay of a vortex array once the stirring laser beam is removed.
ISSN:	0950-0340 1362-3044
DOI:	10.1080/09500340008232191