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Pushing forward the stability and accuracy of Sr optical lattice clocks

Grégoire Vallet, Sławomir Bilicki, Eva Bookjans +2 more

Apr 10, 20180 citations

Precision Measurements with an 87Sr Optical Lattice Clock

Travis Nicholson, Gretchen K. Campbell, Sebastian Blatt +6 more

Bulletin of the American Physical SocietyMay 23, 20090 citations

SR OPTICAL CLOCK WITH HIGH STABILITY AND ACCURACY

Andrew D. Ludlow, Sebastian Blatt, M. BOYD +12 more

We report on our recent evaluations of stability and accuracy of the JILA Sr optical lattice clock. We discuss precision tools for the lattice clock, including a stabilized clock laser with sub-Hz linewidth, fs-comb based technology allowing accurate clock comparison in both the microwave and optical domains, and clock transfer over optical fiber in an urban environment. High resolution spectroscopy (Q > 2 × 10^14) of lattice-confined, spin-polarized strontium atoms is used for both a high-performance optical clock and atomic structure measurement. Using a Ca optical standard for comparison, the overall systematic uncertainty of the Sr clock is reduced to < 2 × 10^−16We report on our recent evaluations of stability and accuracy of the JILA Sr optical lattice clock. We discuss precision tools for the lattice clock, including a stabilized clock laser with sub-Hz linewidth, fs-comb based technology allowing accurate clock comparison in both the microwave and optical domains, and clock transfer over optical fiber in an urban environment. High resolution spectroscopy (Q > 2 × 10^14) of lattice-confined, spin-polarized strontium atoms is used for both a high-performance optical clock and atomic structure measurement. Using a Ca optical standard for comparison, the overall systematic uncertainty of the Sr clock is reduced to < 2 × 10^−16

Laser SpectroscopyApr 1, 20080 citations

Evaluation of Lattice Light Shift at Low 10−19 Uncertainty for a Shallow Lattice Sr Optical Clock

Kyungtae Kim, Alexander Aeppli, Tobias Bothwell +1 more

A Wannier-Stark optical lattice clock has demonstrated unprecedented measurement precision for optical atomic clocks. We present a systematic evaluation of the lattice light shift, a necessary next step for establishing this system as an accurate atomic clock. With precise control of the atomic motional states in the lattice, we report accurate measurements of the multipolar and the hyperpolar contributions and the operational lattice light shift with a fractional frequency uncertainty of 3.5×10^{-19}.A Wannier-Stark optical lattice clock has demonstrated unprecedented measurement precision for optical atomic clocks. We present a systematic evaluation of the lattice light shift, a necessary next step for establishing this system as an accurate atomic clock. With precise control of the atomic motional states in the lattice, we report accurate measurements of the multipolar and the hyperpolar contributions and the operational lattice light shift with a fractional frequency uncertainty of 3.5×10^{-19}.

arXiv:2210.16374Physical Review LettersMar 15, 202363 citations

An optical lattice clock with accuracy and stability at the 10−18 level

Benjamin Bloom, Travis Nicholson, Jason Williams +6 more

arXiv:1309.1137NatureJan 22, 20141,072 citations

An Optical Lattice Clock with Fermionic and Bosonic Sr Atoms

Xavier Baillard, Mathilde Fouché, Rodolphe Le Targat +14 more

We report recent experiments performed with our Sr optical lattice clock. With the fermionic isotope87Sr, the clock accuracy approaches 10-15using spin-polarized atoms. We also report the first accuracy evaluation of an optical lattice clock with bosonic atoms, here88Sr.

Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)Aug 1, 20070 citations

Towards the next decades of precision and accuracy in a 87 Sr optical lattice clock

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