Dual-Species Quantum Degeneracy of 40K and 87Rb on an Atom Chip

Dual-Species Quantum Degeneracy of 40K and 87Rb on an Atom Chip
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原子芯片上 40K 和 87Rb 的双物种量子简并

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发表时间:
2006
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通讯作者:
J. Thywissen
J. Thywissen
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作者:
M. Extavour;L. LeBlanc;T. Schumm;B. Cieslak;S. Myrskog;A. Stummer;S. Aubin;J. Thywissen

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在这篇文章中,我们回顾了我们最近用40 K-87 Rb混合物进行的实验。我们在原子芯片上演示了40 K-87 Rb混合物的快速交感冷却到双量子简并。我们还提供了有关高效BEC生产,物种选择性磁约束以及光学晶格与原子芯片集成的进展的详细信息。我们的蒸发效率使我们能够在蒸发6秒后达到双简并-比传统的磁阱更快。当优化蒸发冷却以单独有效蒸发87 Rb时,我们仅在4 s蒸发和8 s总循环时间后实现BEC。
In this article we review our recent experiments with a 40K‐87Rb mixture. We demonstrate rapid sympathetic cooling of a 40K‐87Rb mixture to dual quantum degeneracy on an atom chip. We also provide details on efficient BEC production, species‐selective magnetic confinement, and progress toward integration of an optical lattice with an atom chip. The efficiency of our evaporation allows us to reach dual degeneracy after just 6 s of evaporation ‐ more rapidly than in conventional magnetic traps. When optimizing evaporative cooling for efficient evaporation of 87Rb alone we achieve BEC after just 4 s of evaporation and an 8 s total cycle time.