A 1D Strontium Optical Lattice Clock With Record Low Intrinsic Instability
ORAL
Abstract
Amongst atomic references under development for the redefinition of the second, strontium has demonstrated several important scientific results, including record instability [1], record atom-atom coherence times [2], and near record accuracy [3]. Our newly upgraded 1D strontium optical lattice clock is currently being evaluated to push the frontiers of all three. Here we report on record low instability and atom-atom coherence time comparable with recent demonstrations. We utilize self-synchronous imaging to rapidly measure intra-cloud frequency differences, a critical step towards ensuring frequency homogeneity across atomic samples necessary for accuracy at the 19th digit.
[1] Oelker, E., et al. "Demonstration of 4.8×10-17 stability at 1 s for two independent optical clocks." Nature Photonics 13.10 (2019): 714-719.
[2] Young, Aaron W., et al. "Half-minute-scale atomic coherence and high relative stability in a tweezer clock." Nature 588.7838 (2020): 408-413.
[3] Bothwell, Tobias, et al. "JILA SrI optical lattice clock with uncertainty of 2.0×10-18." Metrologia 56.6 (2019): 065004.
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Presenters
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Tobias Bothwell
JILA, NIST, and University of Colorado Boulder, JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, 440 UCB, Boulder, Colorado 80309, USA, University of Colorado, Boulder
Authors
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Tobias Bothwell
JILA, NIST, and University of Colorado Boulder, JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, 440 UCB, Boulder, Colorado 80309, USA, University of Colorado, Boulder