Precision measurements on the ¹³⁸Ba⁺ 6s²S_1/2-5d²D_5/2 clock transition

2019/06/30 by Kyle J. Arnold, Rattakorn Kaewuam, Sapam R. Chanu +3 · 1 citation
Physics and Astronomy · #physics.atom-ph #quant-ph

paper · pdf · doi:10.1103/physrevlett.124.193001

published as Phys. Rev. Lett. 124, 193001 (2020) · 5 pages, 4 figures, plus 3 page Supplemental Material

arxiv created 2020/03/12 · arxiv updated 2020/05/20

Abstract

Measurement of the ¹³⁸Ba^{+ 2}S_1/2 - ²D_5/2 clock transition frequency and D_5/2 Landé g_J factor are reported. The clock transition frequency ν_Ba⁺=170 126 432 449 333.31±(0.39)_stat±(0.29)_sys Hz, is obtained with accuracy limited by the frequency calibration of the maser used as a reference oscillator. The Landé g_J-factor for the ²D_5/2 level is determined to be g_D=1.200 367 39(24), which is a 30-fold improvement on previous measurements. The g-factor measurements are corrected for an ac-magnetic field from trap-drive-induced currents in the electrodes, and data taken over a range of magnetic fields underscores the importance of accounting for this systematic.

Cited by

• Field Deviations in Dipole-Driven Linear Paul Traps: Effects of Endcap Boundaries and their Minimization