Hertz-level measurement of the optical clock frequency in a single 88Sr+ ion

被引：277

作者：

Margolis, HS ^{[1
]}

Barwood, GP ^{[1
]}

Huang, G ^{[1
]}

Klein, HA ^{[1
]}

Lea, SN ^{[1
]}

Szymaniec, K ^{[1
]}

Gill, P ^{[1
]}

机构：

[1] Natl Phys Lab, Teddington TW11 0LW, Middx, England

来源：

SCIENCE | 2004年 / 306卷 / 5700期

关键词：

D O I：

10.1126/science.1105497

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：

The frequency of the 5S S-2(1/2)-4d D-2(5/2) electric quadrupole clock transition in a single, trapped, laser-cooled Sr-88(+) ion has been measured by using an optical frequency comb referenced to a cesium fountain primary frequency standard. The frequency of the transition is measured as 444,779,044,095,484.6 (1.5) hertz, with a fractional uncertainty within a factor of 3 of that of the cesium standard. Improvements' required to obtain a cesium-limited frequency measurement are described and are expected to lead to a Sr-88(+) optical clock with stability and reproducibility exceeding that of the primary cesium standard.

引用

页码：1355 / 1358

页数：4

共 23 条

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SZYMANIEC K, UNPUB

[22] Accurate measurement of large optical frequency differences with a mode-locked laser [J].