$^{87}$Sr lattice clock with inaccuracy below 10$^{-15}$

Details $^{87}$Sr lattice clock with inaccuracy below 10$^{-15}$ $^{87}$Sr lattice clock with inaccuracy below 10$^{-15}$

2006-11-07

arxiv.org/abs/physics/0611067v1

Phys. Rev. Lett. 98, 083002 (2007)

Physics

Atomic Physics

4 pages, 4 figures, 2 tables

Scientific paper

10.1103/PhysRevLett.98.083002

Aided by ultra-high resolution spectroscopy, the overall systematic uncertainty of the $^{1}S_{0}$-$^{3}P_{0}$ clock resonance for lattice-confined $^{87}$Sr has been characterized to $9\times10^{-16}$. This uncertainty is at a level similar to the Cs-fountain primary standard, while the potential stability for the lattice clocks exceeds that of Cs. The absolute frequency of the clock transition has been measured to be 429,228,004,229,874.0(1.1) Hz, where the $2.5\times10^{-15}$ fractional uncertainty represents the most accurate measurement of a neutral-atom-based optical transition frequency to date.

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