Vortex precession in Bose-Einstein condensates: Observations with filled and empty cores

被引:241
作者
Anderson, BP [1 ]
Haljan, PC
Wieman, CE
Cornell, EA
机构
[1] Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Quantum Phys Div, Boulder, CO 80309 USA
[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
关键词
D O I
10.1103/PhysRevLett.85.2857
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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 Rb-87, with one state supporting a vortex and the other filling the vortex core. Subsequently, the state filling the core can be partially or completely removed, reducing the radius of the core by as much as a factor 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 precession frequency of the vortex core about the condensate axis changes by only a factor of 2.
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页码:2857 / 2860
页数:4
相关论文
共 32 条
[1]   Detection of vorticity in Bose-Einstein condensed gases by matter-wave interference [J].
Bolda, EL ;
Walls, DF .
PHYSICAL REVIEW LETTERS, 1998, 81 (25) :5477-5480
[2]   Predicted signatures of rotating Bose-Einstein condensates [J].
Butts, DA ;
Rokhsar, DS .
NATURE, 1999, 397 (6717) :327-329
[3]   Free expansion of Bose-Einstein condensates with quantized vortices [J].
Dalfovo, F ;
Modugno, M .
PHYSICAL REVIEW A, 2000, 61 (02) :5
[4]  
Donnelly R. J., 1991, QUANTIZED VORTICES H, V2
[5]   Dissipative dynamics of a vortex state in a trapped Bose-condensed gas [J].
Fedichev, PO ;
Shlyapnikov, GV .
PHYSICAL REVIEW A, 1999, 60 (03) :R1779-R1782
[6]   Stable and unstable vortices in multicomponent Bose-Einstein condensates [J].
García-Ripoll, JJ ;
Pérez-García, VM .
PHYSICAL REVIEW LETTERS, 2000, 84 (19) :4264-4267
[7]   Stability of vortices in inhomogeneous Bose condensates subject to rotation:: A three-dimensional analysis [J].
García-Ripoll, JJ ;
Pérez-García, VM .
PHYSICAL REVIEW A, 1999, 60 (06) :4864-4874
[8]  
HALJAN PC, IN PRESS
[9]  
HALJAN PC, 2000, P QUANT EL LAS SCI C
[10]   Dynamics of component separation in a binary mixture of Bose-Einstein condensates [J].
Hall, DS ;
Matthews, MR ;
Ensher, JR ;
Wieman, CE ;
Cornell, EA .
PHYSICAL REVIEW LETTERS, 1998, 81 (08) :1539-1542