Effect of cold collisions on spin coherence and resonance shifts in a magnetically trapped ultracold gas

被引：177

作者：

Harber, DM ^{[1
]}

Lewandowski, HJ

McGuirk, JM

Cornell, EA

机构：

[1] Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

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

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

来源：

PHYSICAL REVIEW A | 2002年 / 66卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.66.053616

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have performed precision microwave spectroscopy on ultracold Rb-87 confined in a magnetic trap, both above and below the Bose-condensation transition. The cold collision frequency shifts for both normal and condensed clouds were measured, which allowed the intrastate and interstate density correlations (characterized by sometimes controversial "factors of 2") to be determined. Additionally, temporal coherence of the normal cloud was studied, and the importance of mean-field and velocity-changing collisions in preserving coherence is discussed.

引用

页数：6

共 18 条

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