Prospects for measuring the electron's electric dipole moment with polyatomic molecules in an optical lattice
Creators
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1.
University of Groningen
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2.
National Institute for Subatomic Physics
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3.
VU Amsterdam
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4.
Massachusetts Institute of Technology
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5.
California Institute of Technology
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6.
National University of the Northeast
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7.
Comenius University
Abstract
We present the conceptual design of an experiment to measure the electron's electric dipole moment (eEDM) using ¹³⁸BaOH molecules in an optical lattice. The BaOH molecule is laser-coolable and highly sensitive to the eEDM, making it an attractive candidate for such a precision measurement, and capturing it in an optical lattice offers potentially very long coherence times. We study possibilities and limitations of this approach, identify the most crucial limiting factors and ways to overcome them. The proposed apparatus can reach a statistical error of 10⁻³⁰𝑒cm by measuring spin precession on a total number of 5×10⁹ molecules over a span of 120 days.
Copyright and License
©2025 American Physical Society.
Acknowledgement
We thank Yuly Chamorro, Scott Eustice, Thomas Meijknecht, Odile Smits, Michael Tarbutt, Anno Touwen, and Julian Wienand for helpful discussions.
Funding
The work of L.F.P., N.B., and S.H. is supported by Project No. VI.C.212.016 financed by the Dutch Research Council (NWO). The work of S.H., A.B., T.F., and I.A.A. is supported by the ENW-M2 NWO Grant No. OCENW.M.21.098. The work of S.H., A.B., and E.P. is supported by ENW-XL NWO Grant No. OCENW.XL21.XL21.074. I.A.A. acknowledges partial support from FONCYT through Grants No. PICT-2021-I-A-0933 and No. PICT-2020-SerieA-0052, and from CONICET through Grant No. PIBAA-2022-0125CO.
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Additional details
Related works
- Is new version of
- Discussion Paper: arXiv:2411.00441 (arXiv)
Funding
- Dutch Research Council
- VI.C.212.016
- Dutch Research Council
- OCENW.M.21.098
- Dutch Research Council
- OCENW.XL21.XL21.074
- Agencia Nacional de Promoción de la Investigación, el Desarrollo Tecnológico y la Innovación
- PICT-2021-I-A-0933
- Agencia Nacional de Promoción de la Investigación, el Desarrollo Tecnológico y la Innovación
- PICT-2020-SerieA-0052
- Consejo Nacional de Investigaciones Científicas y Técnicas
- PIBAA-2022-0125CO
Dates
- Accepted
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2025-06-03