Quasi-2D confinement of a BEC in a combined optical and magnetic potential

被引：77

作者：

Smith, NL ^{[1
]}

Heathcote, WH ^{[1
]}

Hechenblaikner, G ^{[1
]}

Nugent, E ^{[1
]}

Foot, CJ ^{[1
]}

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2005年 / 38卷 / 03期

关键词：

D O I：

10.1088/0953-4075/38/3/007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have added an optical potential to a conventional time-averaged orbiting potential (TOP) trap to create a highly anisotropic hybrid trap for ultracold atoms. Axial confinement is provided by the optical potential; the maximum frequency currently obtainable in this direction is 2.2 kHz for rubidium. The radial confinement is independently controlled by the magnetic trap and can be a factor of 700 times smaller than in the axial direction. This large anisotropy is more than sufficient to confine condensates with similar to 10(5) atoms in a quasi-2D (Q2D) regime, and we have verified this by measuring a change in the free expansion of the condensate; our results agree with a variational model.

引用

页码：223 / 235

页数：13

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