Precision spectroscopy of negative-ion resonances in ultralong-range Rydberg molecules

Abstract

The level structure of negative-ions near the electron detachment limit dictates the low-energy scattering of an electron with the parent neutral atom. We demonstrate that a single ultracold atom bound inside a Rydberg orbit forming an ultralong-range Rydberg molecule provides an atomic-scale system which is highly sensitive to electron-neutral scattering and thus allows for detailed insights into the underlying near-threshold anion states. Our measurements reveal the so far unobserved fine structure of the ${}^3{P}_J$ triplet of Rb${}^{-}$ and allow us to extract parameters of the associated $p$-wave scattering resonances which deviate from previous theoretical estimates. Moreover, we observe a novel alignment mechanism for Rydberg molecules mediated by spin-orbit coupling in the negative ion.

arXiv comment11 pages, 6 figures

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Cited by in corpus (26)

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• Heteronuclear long-range Rydberg molecules
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• Pump Probe Spectroscopy of Bose Polarons: Dynamical Formation and Coherence
• Vibronic interactions in trilobite and butterfly Rydberg molecules
• Observation of spin-orbit-dependent electron scattering using long-range Rydberg molecules
• Slow decay processes of electrostatically trapped Rydberg NO molecules
• Electric field-induced wave-packet dynamics and geometrical rearrangement of trilobite Rydberg molecules
• Non-adiabatic decay of Rydberg-atom-ion molecules
• Formation of ultracold ion pairs through long-range Rydberg molecules
• An ultracold heavy Rydberg system formed from ultra-long-range molecules bound in a stairwell potential
• Efficient variational approach to dynamics of a spatially extended bosonic Kondo model
• Non-adiabatic interaction effects in the spectra of ultralong-range Rydberg molecules
• Green's function treatment of Rydberg molecules with spins
• Rydberg Macrodimers: Diatomic molecules on the micrometer scale
• Predicting quasibound states of negative ions
• Photodissociation of long-range Rydberg molecules
• Individual assembly of two-species Rydberg molecules using optical tweezers
• Kato's theorem and ultralong-range Rydberg molecules
• Charged ultralong-range Rydberg trimers
• Ultralong-range Rydberg molecules of Hg atoms
• Dynamics of atoms within atoms
• Ring Rydberg Composites
• Long-range Rydberg molecule Rb${}_2$: Two-electron \textit{R}-matrix calculations at intermediate internuclear distances