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An optical lattice clock with spin-polarized 87Sr atoms |
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| Authors: | X. Baillard M. Fouché R. Le Targat P. G. Westergaard A. Lecallier F. Chapelet M. Abgrall G. D. Rovera P. Laurent P. Rosenbusch S. Bize G. Santarelli A. Clairon P. Lemonde G. Grosche B. Lipphardt H. Schnatz |
| Affiliation: | (1) LNE-SYRTE, Observatoire de Paris, 61 avenue de l'Observatoire, 75014 Paris, France;(2) Laboratoire Collisions Agrégats Réactivité, UMR 5589 CNRS, Université Paul Sabatier Toulouse 3, IRSAMC, 31062 Toulouse Cedex 9, France;(3) Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany |
| Abstract: | We present a new evaluation of an 87Sr optical lattice clock using spin polarized atoms. The frequency of the 1S0→3P0 clock transition is found to be 429 228 004 229 873.6 Hz with a fractional uncertainty of 2.6×10-15, a value that is comparable to the frequency difference between the various primary standards throughout the world. This measurement is in excellent agreement with a previous one of similar accuracy [Phys. Rev. Lett. 98, 083002 (2007)]. |
| Keywords: | KeywordHeading" >PACS. 06.30.Ft Time and frequency 37.10.Jk Atoms in optical lattices 32.60.+i Zeeman and Stark effects 32.30.Jc Visible and ultraviolet spectra |
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