Vortex precession in bose-einstein condensates: Observations with filled and empty cores

B. P. Anderson; P. C. Haljan; C. E. Wienian; E. A. Cornell

doi:10.1142/9789812813787_0079

Vortex precession in bose-einstein condensates: Observations with filled and empty cores

B. P. Anderson, P. C. Haljan, C. E. Wienian, E. A. Cornell

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Abstract

We have observed and characterized the dynamics of singly quantized vortices in dilute-gas Bose- Einstein condensates. Our condensates are produced in a superposition of two internal states of ⁸⁵Rb, with one state supporting a vortex and the other filling the vortex corc. Subsequently, the state filling the core can be partially or completely removed, reducing the radius of the core by as much as a [actor of 13. all the way down to its bare value of the healing length. The corresponding superfluid rotation rates, evaluated at the core radius, vary by a factor of 150, but the prccession fl-eqtiency of the vortex core about the condensate axis changes by only a factor of 2.

Original language	English (US)
Title of host publication	Collected Papers of Carl Wieman
Publisher	World Scientific Publishing Co.
Pages	597-600
Number of pages	4
ISBN (Electronic)	9789812813787
ISBN (Print)	9812704159, 9789812704153
DOIs	https://doi.org/10.1142/9789812813787_0079
State	Published - Jan 1 2008
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1142/9789812813787_0079

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abstract = "We have observed and characterized the dynamics of singly quantized vortices in dilute-gas Bose- Einstein condensates. Our condensates are produced in a superposition of two internal states of 85Rb, with one state supporting a vortex and the other filling the vortex corc. Subsequently, the state filling the core can be partially or completely removed, reducing the radius of the core by as much as a [actor of 13. all the way down to its bare value of the healing length. The corresponding superfluid rotation rates, evaluated at the core radius, vary by a factor of 150, but the prccession fl-eqtiency of the vortex core about the condensate axis changes by only a factor of 2.",

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AB - We have observed and characterized the dynamics of singly quantized vortices in dilute-gas Bose- Einstein condensates. Our condensates are produced in a superposition of two internal states of 85Rb, with one state supporting a vortex and the other filling the vortex corc. Subsequently, the state filling the core can be partially or completely removed, reducing the radius of the core by as much as a [actor of 13. all the way down to its bare value of the healing length. The corresponding superfluid rotation rates, evaluated at the core radius, vary by a factor of 150, but the prccession fl-eqtiency of the vortex core about the condensate axis changes by only a factor of 2.

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Vortex precession in bose-einstein condensates: Observations with filled and empty cores

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