A Fermi-degenerate three-dimensional optical lattice clock

Author:

Campbell S. L.12ORCID,Hutson R. B.12ORCID,Marti G. E.1,Goban A.1ORCID,Darkwah Oppong N.1ORCID,McNally R. L.12,Sonderhouse L.12ORCID,Robinson J. M.12,Zhang W.1ORCID,Bloom B. J.12ORCID,Ye J.12ORCID

Affiliation:

1. JILA, National Institute of Standards and Technology (NIST) and University of Colorado Boulder, 440 UCB, Boulder, CO 80309, USA.

2. Department of Physics, University of Colorado Boulder, 390 UCB, Boulder, CO 80309, USA.

Abstract

Making a denser optical lattice clock Some of today's most advanced clocks are made up of large numbers of atoms lined up in a one-dimensional (1D) optical lattice. The numbers improve clock stability, but atomic interactions can limit accuracy. Campbell et al. loaded their fermionic strontium atoms into a 3D optical lattice. The low temperatures and strong interactions ensured that the atoms avoided one another, resulting in a neat pattern where each lattice site was occupied by exactly one atom. This ordering reduced the influence of interactions on the clock's accuracy, whereas the high density of atoms enabled by the 3D geometry improved the precision. Science , this issue p. 90

Funder

National Science Foundation

National Institute of Standards and Technology

Air Force Office of Scientific Research

Defense Sciences Office, DARPA

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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