Towards an order of magnitude improved sensitivity to the electron's EDM with trapped HfF$^{\mathrm{+}}$

POSTER

Abstract

In 2017, our group completed the first measurement of the electron's electric dipole moment (eEDM, $d_{e})$ using trapped molecular ions, yielding a 90{\%} confidence upper bound of \textbar $d_{e}$\textbar \textless 1.3 x 10$^{\mathrm{-28}} \quad e$ cm. Our measurement [1], which was statistics-limited, provided confirmation of the upper bound on \textbar $d_{e}$\textbar set by the ACME Collaboration [2], and demonstrated coherence times over 1 second using trapped molecules -- a valuable feature for future eEDM searches. Here, we will present our progress towards an order of magnitude higher statistical sensitivity via increased sample size and coherence time, cooling of the rotational degree of freedom, and imaging of photodissociation products. [1] W. B. Cairncross \textit{et al}., Phys. Rev. Lett. \textbf{119}, 153001 (2017) [2] The ACME Collaboration, Science \textbf{343}, 269 (2014)

*This work was supported by NSF Award 1734006.

Authors

  • William B. Cairncross

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado
    • JILA, NIST, and University of Colorado, and Department of Physics, University of Colorado

  • Tanya S. Roussy

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado

  • Daniel N. Gresh

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado

  • Kia Boon Ng

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado

  • Jeffrey Meyers

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado

  • Kevin Boyce

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado

  • Yan Zhou

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado

  • Yuval Shagam

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado

  • Jun Ye

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado

  • Eric A. Cornell

    • JILA, NIST and University of Colorado, and Department of Physics, University of Colorado