Statistical uncertainty of 2.5 × 10 -16 for the 199Hg 1S0-3P0 clock transition against a primary frequency standard

John Mcferran, L. Yi, S. Mejri, W. Zhang, S. Di Manno, M. Abgrall, J. Guéna, Y. Le Coq, S. Bize

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14 Citations (Scopus)

Abstract

High-resolution spectroscopy has been carried out on the 199Hg 1S0-3P0 spin and dipole forbidden transition, where the atoms are confined in a vertical one-dimensional optical lattice trap using light at the magic wavelength. We describe various characteristics of the resulting line spectra and assess the strength of the Lamb-Dicke confinement. Through a series of absolute frequency measurements of the 199Hg clock transition with respect to the LNE-SYRTE primary frequency standard, recorded over a 3-month period, we demonstrate a statistical fractional uncertainty of 2.5×10-16. We include details relating to the generation of ultraviolet light at three wavelengths necessary for the experiment: 253.7 nm for cooling and detection, 265.6 nm for clock transition probing, and 362.570 nm for lattice trapping, along with further aspects related to the magic wavelength evaluation. © 2014 American Physical Society.
Original languageEnglish
Pages (from-to)043432-1 - 043432-8
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume89
Issue number4
DOIs
Publication statusPublished - 2014

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