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arXiv · 2207.08582

Hyperfine Structure of $nP_{1/2}$ Rydberg States in $^{85}$Rb

Ryan Cardman·Georg Raithel
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Abstract

We measure the hyperfine structure of $nP_{1/2}$ Rydberg states using mm-wave spectroscopy on an ensemble of laser-cooled $^{85}$Rb atoms. Systematic uncertainties in our measurement from the Zeeman splittings induced by stray magnetic fields and dipole-dipole interactions between two Rydberg atoms are factored in with the obtained statistical uncertainty. Our final measurement of the $nP_{1/2}$ hyperfine coupling constant is $A_{\text{hfs}}=1.443(31)$~GHz. This measurement is useful for studies of long-range Rydberg molecules, Rydberg electrometry, and quantum simulation with dipole-dipole interactions involving $nP_{1/2}$ atoms.

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Ryan Cardman, Georg Raithel. 2022-07-18. Hyperfine Structure of $nP_{1/2}$ Rydberg States in $^{85}$Rb. https://doi.org/10.1103/physreva.106.052810

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