Proof of principle for a high sensitivity search for the electric dipole moment of the electron using the metastable a(1)[^3Σ^+] state of PbO

Abstract

The metastable a(1)[^3Σ^+] state of PbO has been suggested as a suitable system in which to search for the electric dipole moment (EDM) of the electron. We report here the development of experimental techniques allowing high-sensitivity measurements of Zeeman and Stark effects in this system, similar to those required for an EDM search. We observe Zeeman quantum beats in fluorescence from a vapor cell, with shot-noise limited extraction of the quantum beat frequencies, high counting rates, and long coherence times. We argue that improvement in sensitvity to the electron EDM by at least two orders of magnitude appears possible using these techniques.

5 pages, 3 figures

References in corpus (3)

• Measurement of the electron electric dipole moment using YbF molecules
• Enhancement of the electric dipole moment of the electron in PbO
• In search of the electron dipole moment: Ab initio calculations on ^207PbO excited states

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