Measuring EDM of <sup>171</sup>Yb Atoms in an Optical Dipole Trap

POSTER

Abstract

The EDM of 171Yb (I = 1/2) is measured with atoms held in an optical dipole trap (ODT). Since Zheng et al. (2022) [1], the E field has been increased to 17.2 kV over an electrode gap of 1 mm, and noise due to the fluctuation of ODT polarization has been reduced. The EDM sensitivity is improved to E-27 e-cm. To quantify the systematic effect induced by parity mixing, both the E field and the ODT laser intensity are calibrated through Stark shifts. Under development is a scheme to simultaneously measure EDM in two ODTs traveling in opposite directions, which would improve statistics as well as suppress the parity-mixing systematic. These trapping and measurement techniques can be transferred to a next-generation EDM measurement of 225Ra.

*This work has been supported by the National Natural Science Foundation of China through Grants No. 91636215, 12174371, 11704368.

Publication: [1] T. A. Zheng., et al. 'Measurement of the Electric Dipole Moment of 171Yb Atoms in an Optical Dipole Trap', Phys. Rev. Lett. 129, 083001(2022)

Presenters

  • Zheng S Wang

    • University of Science and Technology of China
    • University of science and technology of china

Authors

  • Zheng S Wang

    • University of Science and Technology of China
    • University of science and technology of china

  • Yang A Yang

    • University of Science and Technology of China

  • Tao A Zheng

    • University of Science and Technology of China

  • Bo S Wang

    • university of science and technology of china

  • Tian Xia

    • University of Science and Technology of China

  • Zheng-Tian Lu

    • University of Science and Technology of China