Ytterbium in Quantum Gases and Atomic Clocks: van der Waals Interactions and Blackbody Shifts

被引：48

作者：

Safronova, M. S. ^{[1
]}

Porsev, S. G. ^{[1
,2
]}

Clark, Charles W. ^{[3
,4
]}

机构：

[1] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

[2] Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Distr, Russia

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

[4] Univ Maryland, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 23期

基金：

美国国家科学基金会;

关键词：

POLARIZABILITIES; COEFFICIENTS; BARIUM;

D O I：

10.1103/PhysRevLett.109.230802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We evaluated the C-6 coefficients of Yb-Yb, Yb-alkali, and Yb-group II van der Waals interactions with 2% uncertainty. The only existing experimental result for such quantities is for the Yb-Yb dimer. Our value, C-6 = 1929(39) a.u., is in excellent agreement with the recent experimental determination of 1932(35) a.u. We have also developed a new approach for the calculation of the dynamic correction to the blackbody radiation shift. We have calculated this quantity for the Yb 6s(2) S-1(0) - 6s6p P-3(0)o clock transition with 3.5% uncertainty. This reduces the fractional uncertainty due to the blackbody radiation shift in the Yb optical clock at 300 K to the 10(-18) level.

引用

页数：5

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