@article{3488c6995f0c431498fd9da04f91a028,
title = "A Fermi-degenerate three-dimensional optical lattice clock",
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.",
author = "Campbell, {S. L.} and Hutson, {R. B.} and Marti, {G. E.} and A. Goban and {Darkwah Oppong}, N. and McNally, {R. L.} and L. Sonderhouse and Robinson, {J. M.} and W. Zhang and Bloom, {B. J.} and J. Ye",
note = "Funding Information: We thank D. E. Chang and H. Ritsch for insightful discussions on dipolar interactions in a 3D lattice. We also acknowledge technical contributions from and discussions with C. Benko, T. Bothwell, S. L. Bromley, K. Hagen, J. L. Hall, B. Horner, H. Johnson, T. Keep, S. Kolkowitz, J. Levine, T. H. Loftus, T. L. Nicholson, E. Oelker, D. G. Reed, and X. Zhang. This work is supported by NIST, the Defense Advanced Research Projects Agency, the Air Force Office of Scientific Research Multidisciplinary University Research Initiative, and the NSF JILA Physics Frontier Center. G.E.M. is supported by a postdoctoral fellowship from the National Research Council, A.G. is supported by a fellowship from the Japan Society for the Promotion of Science, and L.S. is supported by a National Defense Science and Engineering Graduate Fellowship. Publisher Copyright: {\textcopyright} 2017, American Association for the Advancement of Science. All rights reserved.",
year = "2017",
month = oct,
day = "6",
doi = "10.1126/science.aam5538",
language = "English",
volume = "358",
pages = "90--94",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6359",
}