Accurate Optical Lattice Clock with Sr87 Atoms

Rodolphe Le Targat, Xavier Baillard, Mathilde Fouché, Anders Brusch, Olivier Tcherbakoff, Giovanni D. Rovera, and Pierre Lemonde
Phys. Rev. Lett. 97, 130801 – Published 26 September 2006

Abstract

We report a frequency measurement of the S01P03 transition of Sr87 atoms in an optical lattice clock. The frequency is determined to be 429 228 004 229 879(5) Hz with a fractional uncertainty that is comparable to state-of-the-art optical clocks with neutral atoms in free fall. The two previous measurements of this transition were found to disagree by about 2×1013, i.e., almost 4 times the combined error bar and 4 to 5 orders of magnitude larger than the claimed ultimate accuracy of this new type of clocks. Our measurement is in agreement with one of these two values and essentially resolves this discrepancy.

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  • Received 23 May 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.130801

©2006 American Physical Society

Authors & Affiliations

Rodolphe Le Targat, Xavier Baillard, Mathilde Fouché, Anders Brusch, Olivier Tcherbakoff, Giovanni D. Rovera, and Pierre Lemonde*

  • LNE-SYRTE, Observatoire de Paris 61, Avenue de l’Observatoire, 75014 Paris, France

  • *Electronic address: pierre.lemonde@obspm.fr

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Issue

Vol. 97, Iss. 13 — 29 September 2006

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