A Fermi-degenerate three-dimensional optical lattice clock

S. L. Campbell, R. B. Hutson, G. E. Marti, A. Goban, N. Darkwah Oppong, R. L. McNally, L. Sonderhouse, J. M. Robinson, W. Zhang, B. J. Bloom, J. Ye

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138 Citations (Scopus)

Abstract

Strontium optical lattice clocks have the potential to simultaneously interrogate millions of atoms with a high spectroscopic quality factor of 4 × 1017. Previously, atomic interactions have forced a compromise between clock stability, which benefits from a large number of atoms, and accuracy, which suffers from density-dependent frequency shifts. Here we demonstrate a scalable solution that takes advantage of the high, correlated density of a degenerate Fermi gas in a three-dimensional (3D) optical lattice to guard against on-site interaction shifts. We show that contact interactions are resolved so that their contribution to clock shifts is orders of magnitude lower than in previous experiments. A synchronous clock comparison between two regions of the 3D lattice yields a measurement precision of 5 × 10–19 in 1 hour of averaging time.

Original languageEnglish
Pages (from-to)90-94
Number of pages5
JournalScience
Volume358
Issue number6359
DOIs
Publication statusPublished - 2017 Oct 6
Externally publishedYes

ASJC Scopus subject areas

  • General

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    Campbell, S. L., Hutson, R. B., Marti, G. E., Goban, A., Darkwah Oppong, N., McNally, R. L., Sonderhouse, L., Robinson, J. M., Zhang, W., Bloom, B. J., & Ye, J. (2017). A Fermi-degenerate three-dimensional optical lattice clock. Science, 358(6359), 90-94. https://doi.org/10.1126/science.aam5538