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Towards the optical second: verifying optical clocks at the SI limit.
McGrew WF, Zhang X, Leopardi H, Fasano RJ, Nicolodi D, Beloy K, Yao J, Sherman JA, Schäffer SA, Savory J, Brown RC, Römisch S, Oates CW, Parker TE, Fortier TM, Ludlow AD. McGrew WF, et al. Among authors: yao j. Phys Rev X. 2019;6(4):10.1364/OPTICA.6.000448. doi: 10.1364/OPTICA.6.000448. Phys Rev X. 2019. PMID: 39568554 Free PMC article.
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