Real-Time Dynamics of Single Vortex Lines and Vortex Dipoles in a Bose-Einstein Condensate

被引：213

作者：

Freilich, D. V. ^{[1
]}

Bianchi, D. M. ^{[1
]}

Kaufman, A. M. ^{[1
]}

Langin, T. K. ^{[1
]}

Hall, D. S. ^{[1
]}

机构：

[1] Amherst Coll, Dept Phys, Amherst, MA 01002 USA

来源：

SCIENCE | 2010年 / 329卷 / 5996期

关键词：

SUPERFLUID-HELIUM; VORTICES; GASES; ATOMS; HE-3;

D O I：

10.1126/science.1191224

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Understanding the behavior of quantized vortices is essential to gaining insight into diverse superfluid phenomena, from critical-current densities in superconductors to quantum turbulence in superfluids. We observe the real-time dynamics of quantized vortices in trapped dilute-gas Bose-Einstein condensates by repeatedly imaging the vortex cores. The precession frequency of a single vortex is measured by explicitly observing its time dependence and is found to be in good agreement with theory. We further characterize the dynamics of vortex dipoles in two distinct configurations: (i) an asymmetric configuration, in which the vortex trajectories are dynamic and nontrivial, and (ii) a stable, symmetric configuration, in which the dipole is stationary.

引用

页码：1182 / 1185

页数：4

共 31 条

[1] Vortex precession in Bose-Einstein condensates: Observations with filled and empty cores [J].