Hertz-Level Measurement of the Optical Clock Frequency in a Single 88 Sr + Ion
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- 19 November 2004
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 306 (5700) , 1355-1358
- https://doi.org/10.1126/science.1105497
Abstract
The frequency of the 5s 2S1/2–4d 2D5/2 electric quadrupole clock transition in a single, trapped, laser-cooled 88Sr+ 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 88Sr+ optical clock with stability and reproducibility exceeding that of the primary cesium standard.Keywords
This publication has 20 references indexed in Scilit:
- Limit on the Present Temporal Variation of the Fine Structure ConstantPhysical Review Letters, 2004
- Measurement of the Electric Quadrupole Moment of theLevel inPhysical Review Letters, 2004
- Subkilohertz absolute-frequency measurement of the 467-nm electric octupole transition inPhysical Review A, 2003
- Absolute Frequency Measurements of theand Ca Optical Clock Transitions with a Femtosecond LaserPhysical Review Letters, 2001
- High-resolution spectroscopy of a singleion: Progress towards an optical frequency standardPhysical Review A, 2001
- External-field shifts of the 199-Hg(+) optical frequency standardJournal of Research of the National Institute of Standards and Technology, 2000
- Sub-dekahertz Ultraviolet Spectroscopy ofPhysical Review Letters, 2000
- Novel miniature ion trapsOptics Communications, 1993
- The “Trapped State” of a Trapped Ion—Line Shifts and ShapeEurophysics Letters, 1992
- Laser phase and frequency stabilization using an optical resonatorApplied Physics B Laser and Optics, 1983