Determination of Landé g_J factor and Zeeman coefficients in ground-state ¹⁷¹Yb⁺ and their applications to quantum frequency standards

2025/01/17 by Han, Jize, Benquan Lu, Lu, Benquan +12
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic Physics (physics.atom-ph) #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum Physics (quant-ph)

paper · pdf · doi:10.48550/arxiv.2501.09973

openalex publication_date 2025/01/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report the determination of the Landé g_J factor and Zeeman coefficients for the ground-state of ¹⁷¹Yb⁺, relevant to microwave quantum frequency standards (QFSs). The g_J factor is obtained by using two independent methods: multiconfiguration Dirac-Hartree-Fock and multireference configuration interaction, yielding a consistent value of 2.002615(70). The first- and second-order Zeeman coefficients are determined as 14,010.78(49) Hz/μT and 31.0869(22) mHz/μT², respectively, based on the calculated g_J factor. These coefficients enable reduced magnetic-field-induced uncertainties, improving the accuracy of the ¹⁷¹Yb⁺ microwave QFSs. The results reported in this work also offer potential for improved constraints on variations in fundamental constants through frequency comparisons, and advancing trapped-ion quantum computers based on the ground-state hyperfine splitting of ¹⁷¹Yb⁺.

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