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Precision Measurement of the Electron’s Electric Dipole Moment Using Trapped Molecular Ions

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Cairncross, William B., Gresh, Daniel N., Grau, Matt, Cossel, Kevin C., Roussy, Tanya S., Ni, Yiqi, Zhou, Yan, Ye, Jun, Cornell, Eric A.·2017·Physical Review Letters

Abstract

We describe the first precision measurement of the electron's electric dipole moment (d_{e}) using trapped molecular ions, demonstrating the application of spin interrogation times over 700 ms to achieve high sensitivity and stringent rejection of systematic errors. Through electron spin resonance spectroscopy on ^{180}Hf^{19}F^{+} in its metastable ^{3}Δ_{1} electronic state, we obtain d_{e}=(0.9±7.7_{stat}±1.7_{syst})×10^{-29} e cm, resulting in an upper bound of |d_{e}|<1.3×10^{-28} e cm (90% confidence). Our result provides independent confirmation of the current upper bound of |d_{e}|<9.4×10^{-29} e cm [J. Baron et al., New J. Phys. 19, 073029 (2017)NJOPFM1367-263010.1088/1367-2630/aa708e], and offers the potential to improve on this limit in the near future.

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Metadata

Authors
Cairncross, W. B., Gresh, D. N., Grau, M., Cossel, K. C., Roussy, T. S., Ni, Y., Zhou, Y., Ye, J., & Cornell, E. A.
Venue
Physical Review Letters
Published
2017-10-09
Volume
119
Issue
15
Pages
153001-153001
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2599625058
Cited by
375
References
16
FWCI
22.66
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Precision Measurement of the Electron’s Electric Dipole Moment Using Trapped Molecular Ions. https://app.cochat.ai/papers/10.1103/physrevlett.119.153001
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Cairncross, W. B., Gresh, D. N., Grau, M., Cossel, K. C., Roussy, T. S., Ni, Y., Zhou, Y., Ye, J., & Cornell, E. A. (2017). Precision Measurement of the Electron’s Electric Dipole Moment Using Trapped Molecular Ions. Physical Review Letters. https://doi.org/10.1103/physrevlett.119.153001

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