Ultracold molecule production via a resonant oscillating magnetic field

被引：118

作者：

Thompson, ST ^{[1
]}

Hodby, E

Wieman, CE

机构：

[1] Univ Colorado, JILA, Natl Inst Stand & Technol, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.95.190404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel atom-molecule conversion technique has been investigated. Ultracold Rb-85 atoms sitting in a dc magnetic field near the 155 G Feshbach resonance are associated by applying a small sinusoidal oscillation to the magnetic field. There is resonant atom to molecule conversion when the modulation frequency closely matches the molecular binding energy. We observe that the atom to molecule conversion efficiency depends strongly on the frequency, amplitude, and duration of the applied modulation and on the phase space density of the sample. This technique offers high conversion efficiencies without the necessity of crossing or closely approaching the Feshbach resonance and allows precise spectroscopic measurements. Efficiencies of 55% have been observed for pure Bose-Einstein condensates.

引用

页数：4

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