Measurement of the Electric Dipole Moment of Yb171 Atoms in an Optical Dipole Trap

T. A. Zheng, Y. A. Yang, S.-Z. Wang, J. T. Singh, Z.-X. Xiong, T. Xia, and Z.-T. Lu
Phys. Rev. Lett. 129, 083001 – Published 19 August 2022
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Abstract

The permanent electric dipole moment (EDM) of the Yb171 (I=1/2) atom is measured with atoms held in an optical dipole trap. By enabling a cycling transition that is simultaneously spin-selective and spin-preserving, a quantum nondemolition measurement with a spin-detection efficiency of 50% is realized. A systematic effect due to parity mixing induced by a static E field is observed, and is suppressed by averaging between measurements with optical dipole traps in opposite directions. The coherent spin precession time is found to be much longer than 300 s. The EDM is determined to be d(Yb171)=(6.8±5.1stat±1.2syst)×1027ecm, leading to an upper limit of |d(Yb171)|<1.5×1026ecm (95% C.L.). These measurement techniques can be adapted to search for the EDM of Ra225.

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  • Received 22 July 2021
  • Revised 22 April 2022
  • Accepted 14 July 2022

DOI:https://doi.org/10.1103/PhysRevLett.129.083001

© 2022 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalGeneral PhysicsParticles & Fields

Authors & Affiliations

T. A. Zheng1, Y. A. Yang1, S.-Z. Wang1, J. T. Singh2, Z.-X. Xiong3, T. Xia1,*, and Z.-T. Lu1,†

  • 1CAS Center for Excellence in Quantum Information and Quantum Physics, School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
  • 2National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
  • 3Key Laboratory of Atomic Frequency Standards, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China

  • *Corresponding author. txia1@ustc.edu.cn
  • corresponding author. ztlu@ustc.edu.cn

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Issue

Vol. 129, Iss. 8 — 19 August 2022

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