| Download | - View accepted manuscript: Sr+88 445-THz single-ion reference at the 10 -17 level via control and cancellation of systematic uncertainties and its measurement against the SI second (PDF, 2.1 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevLett.109.203002 |
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| Author | Search for: Madej, Alan A.1; Search for: Dubé, Pierre1; Search for: Zhou, Zichao1; Search for: Bernard, John E.1; Search for: Gertsvolf, Marina1 |
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| Affiliation | - National Research Council of Canada. Measurement Science and Standards
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| Format | Text, Article |
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| Subject | Absolute frequency measurements; Center frequency; Ion transition; Laser-cooled; Optical frequency standard; Polarizabilities; Single ion; Strontium ion; Systematic uncertainties; Time transfer; Frequency standards; Ions; Strontium; Uncertainty analysis |
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| Abstract | We describe experiments and measurements on a trapped and laser-cooled single ion of Sr+88 which, when probed on its reference 5sS1/22→4dD5/22 transition at 445THz, provides an optical frequency standard of evaluated accuracy outperforming the current realization of the SI second. Studies are presented showing that micromotion-associated shifts of the standard can be reduced to the 10 -18 level and uncertainties in the blackbody-induced shifts for the current system are at the low 10 -17 level due to the relatively well-known polarizability of the strontium ion system and careful choice of the trap structure. The current evaluated systematic shifts for the ion transition are at a fractional uncertainty of 2×10 -17. An absolute frequency measurement performed over a two-month period relative to a maser referenced to the SI second via Global Positioning System time transfer has determined the center frequency for the transition at ν SD= 444779044095485.5±0.9Hz (1σ). |
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| Publication date | 2012-11-12 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21269546 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 274298e0-fe5e-48f5-8e2a-99255f633147 |
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| Record created | 2013-12-12 |
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| Record modified | 2020-06-04 |
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