EDM measurement in 129Xe atom using dual active feedback nuclear spin maser

T. Sato, Y. Ichikawa, Y. Ohtomo, Y. Sakamoto, S. Kojima, C. Funayama, T. Suzuki, M. Chikamori, E. Hikota, M. Tsuchiya, T. Furukawa, A. Yoshimi, C. P. Bidinosti, T. Ino, H. Ueno, Y. Matsuo, T. Fukuyama, K. Asahi

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)


    The technique of an active nuclear spin maser is adopted in the search for electric dipole moment in a diamagnetic atom 129Xe. In order to reduce systematic uncertainties arising from long-term drifts of the external magnetic field and from the contact interaction between longitudinal polarized Rb atoms and 129Xe spin, a 3He comagnetometer with a double-cell geometry was employed. The remaining shift, which turned out to show some correlation with the cell temperature, was mitigated by stabilizing the cell temperature. As a result, the frequency drift of the 129Xe maser was reduced from 12 mHz to 700 μHz, and the determination precision of frequency of 8.7 nHz was obtained for a 2×104 s measurement time using the double-cell geometry cell.

    Original languageEnglish
    Pages (from-to)147-153
    Number of pages7
    JournalHyperfine Interactions
    Issue number1-3
    Publication statusPublished - Apr 1 2015


    • Electric dipole moment
    • Fundamental symmetry
    • Nuclear spin maser

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Nuclear and High Energy Physics
    • Condensed Matter Physics
    • Physical and Theoretical Chemistry


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