Heteronuclear molecules in an optical dipole trap

被引：92

作者：

Zirbel, J. J. ^{[1
,2
]}

Ni, K. -K. ^{[1
,2
]}

Ospelkaus, S. ^{[1
,2
]}

Nicholson, T. L. ^{[1
,2
]}

Olsen, M. L. ^{[1
,2
]}

Julienne, P. S. ^{[3
,4
]}

Wieman, C. E. ^{[1
,2
]}

Ye, J. ^{[1
,2
]}

Jin, D. S. ^{[1
,2
]}

机构：

[1] Natl Inst Stand & Technol, JILA, Quantum Phys Div, Boulder, CO 80309 USA

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

[3] Natl Inst Stand & Technol, Joint Quantum Inst, Gaithersburg, MD 20899 USA

[4] Univ Maryland, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW A | 2008年 / 78卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.78.013416

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the creation and characterization of heteronuclear (KRb)-K-40-Rb-87 Feshbach molecules in an optical dipole trap. Starting from an ultracold gas mixture of K-40 and Rb-87 atoms, we create as many as 25 000 molecules at 300 nK by rf association. Optimizing the association process, we achieve a conversion efficiency of 25%. We measure the temperature dependence of the rf association process and find good agreement with a phenomenological model that has previously been applied to Feshbach molecule creation by slow magnetic-field sweeps. We also present a measurement of the binding energy of the heteronuclear molecules in the vicinity of the Feshbach resonance and provide evidence for Feshbach molecules as deeply bound as 26 MHz.

引用

页数：7

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