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Demonstration of a Mobile Optical Clock Ensemble at Sea

Autor: Ahern, E., Allison, J. W., Billington, C., Hébert, N. Bourbeau, Hilton, A. P., Klantsataya, E., Locke, C., Luiten, A. N., Nelligan, M., Offer, R. F., Perrella, C., Scholten, S. K., White, B., Sparkes, B. M., Beard, R., Elgin, J. D., Martin, K. W.

Atomic clocks have been at the leading edge of accuracy and precision since their inception in the 1950s. However, typically the most capable of these clocks have been confined to laboratories despite the fact that there are compelling reasons to app

Externí odkaz: http://arxiv.org/abs/2406.03716

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The Functional Average Treatment Effect

Autor: Sparkes, Shane, Garcia, Erika, Zhang, Lu

This paper establishes the functional average as an important estimand for causal inference. The significance of the estimand lies in its robustness against traditional issues of confounding. We prove that this robustness holds even when the probabil

Externí odkaz: http://arxiv.org/abs/2312.00219

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Properties and Deviations of Random Sums of Densely Dependent Random Variables

Autor: Sparkes, Shane, Zhang, Lu

A classical problem of statistical inference is the valid specification of a model that can account for the statistical dependencies between observations when the true structure is dense, intractable, or unknown. To address this problem, a new varian

Externí odkaz: http://arxiv.org/abs/2310.11554

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Wavefront Curvature in Optical Atomic Beam Clocks

Autor: Strathearn, A., Offer, R. F., Hilton, A. P., Klantsataya, E., Luiten, A. N., Anderson, R. P., Sparkes, B. M., Stace, T. M.

Atomic clocks provide a reproducible basis for our understanding of time and frequency. Recent demonstrations of compact optical clocks, employing thermal atomic beams, have achieved short-term fractional frequency instabilities in the $10^{-16}$, co

Externí odkaz: http://arxiv.org/abs/2212.00308

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