arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1003.4819cond-mat.quant-gas
收藏

Rb-85可调相互作用玻色-爱因斯坦凝聚体机

Rb-85 tunable-interaction Bose-Einstein condensate machine

P. A. Altin, N. P. Robins, D. Doering, J. E. Debs, R. Poldy, C. Figl, J. D. Close

摘要:

我们描述了我们的实验装置创建稳定的玻色-爱因斯坦凝聚体的Rb-85与可调粒子间的相互作用。我们使用共振冷却与Rb-87在两个阶段,最初在一个紧密的Ioffe-Pritchard磁阱,随后在一个弱的,大体积的交叉光偶极阱,使用155 G费什巴赫共振操纵的弹性和非弹性散射性质的Rb-85原子。典型的Rb-85凝聚体包含4 × 10^4个原子,散射长度为a=+200a_0。我们的极简装置非常适合于双组分和旋量Rb凝聚物的实验,并且在JILA的Rb-85 BEC机器上有几个简化(Papp,2007; Papp和Wieman,2006),我们将在本文的最后讨论。

英文摘要:

We describe our experimental setup for creating stable Bose-Einstein condensates of Rb-85 with tunable interparticle interactions. We use sympathetic cooling with Rb-87 in two stages, initially in a tight Ioffe-Pritchard magnetic trap and subsequently in a weak, large-volume crossed optical dipole trap, using the 155 G Feshbach resonance to manipulate the elastic and inelastic scattering properties of the Rb-85 atoms. Typical Rb-85 condensates contain 4 x 10^4 atoms with a scattering length of a=+200a_0. Our minimalist apparatus is well-suited to experiments on dual-species and spinor Rb condensates, and has several simplifications over the Rb-85 BEC machine at JILA (Papp, 2007; Papp and Wieman, 2006), which we discuss at the end of this article.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑