| Téléchargement | - Voir le manuscrit accepté : 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 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevLett.109.203002 |
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| Auteur | Rechercher : Madej, Alan A.1; Rechercher : Dubé, Pierre1; Rechercher : Zhou, Zichao1; Rechercher : Bernard, John E.1; Rechercher : Gertsvolf, Marina1 |
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| Affiliation | - Conseil national de recherches du Canada. Science des mesures et étalons
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| Format | Texte, Article |
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| Sujet | 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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| Résumé | 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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| Date de publication | 2012-11-12 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21269546 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 274298e0-fe5e-48f5-8e2a-99255f633147 |
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| Enregistrement créé | 2013-12-12 |
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| Enregistrement modifié | 2020-06-04 |
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