Preparation of a pure molecular quantum gas

被引：349

作者：

Herbig, J ^{[1
]}

Kraemer, T ^{[1
]}

Mark, M ^{[1
]}

Weber, T ^{[1
]}

Chin, C ^{[1
]}

Nägerl, HC ^{[1
]}

Grimm, R ^{[1
]}

机构：

[1] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

来源：

SCIENCE | 2003年 / 301卷 / 5639期

关键词：

D O I：

10.1126/science.1088876

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：

An ultracold molecular quantum gas is created by application of a magnetic field sweep across a Feshbach resonance to a Bose-Einstein condensate of cesium atoms. The ability to separate the molecules from the atoms permits direct imaging of the pure molecular sample. Magnetic levitation enables study of the dynamics of the ensemble on extended time scales. We measured ultralow expansion energies in the range of a few nanokelvin for a sample of 3000 molecules. Our observations are consistent with the presence of a macroscopic molecular matter wave.

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页码：1510 / 1513

页数：4

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