SAMOP 2023 – scientific programme
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A: Fachverband Atomphysik
A 27: Poster III
A 27.5: Poster
Thursday, March 9, 2023, 16:30–19:00, Empore Lichthof
Charged ultralong-range Rydberg trimers and ion-Rydberg dynamics — •Daniel Bosworth1,2, Frederic Hummel3, and Peter Schmelcher1,2 — 1The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — 2Zentrum für Optische Quantentechnologien, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — 3Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany
We show that the recently observed class of long-range ion-Rydberg molecules can be divided into two families of states, which are characterised by their unique electronic structures resulting from the ion-induced admixture of quantum defect-split Rydberg nP states with different low-field seeking high-l states. We predict that in both cases these diatomic molecular states can bind additional ground state atoms lying within the orbit of the Rydberg electron, thereby forming charged ultralong-range Rydberg molecules (ULRM) with binding energies similar to that of conventional non-polar ULRM. To demonstrate this, we consider a Rydberg atom interacting with a single ground state atom and an ion. The additional atom breaks the system's cylindrical symmetry, which leads to mixing between states that would otherwise be decoupled. The predicted trimer binding energies and excitation series are distinct enough from those of the dimer to be observed using current experimental techniques. Complimentary to this time-independent study, we have developed a semi-classical model for the dynamics of an s-state Rydberg atom in the presence of an ion.