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A: Fachverband Atomphysik

A 40: Ultra-cold Atoms, Ions and BEC V (joint session A/Q)

A 40.1: Invited Talk

Friday, March 6, 2026, 11:00–11:30, N 1

Toolbox for of Rydberg state engineering in trapped ions — •Robin Thomm, Vinay Shankar, Natalia Kuk, and Markus Hennrich — Department of Physics, Stockholm University

Trapped Rydberg ions offer a novel approach that combines the advantages of deep, state independent confinement and excellent external and internal control found in trapped ions with the scaling of key atomic properties, such as polarizability and interaction strengths, of Rydberg states. By coherently moving between different Rydberg states in a controlled manner, one could tune these parameters to maximize effects like inter-ion coupling and minimize adverse effects. We demonstrate such control of Rydberg S and P states coupled by microwave radiation. We show Rabi oscillations on the nanosecond timescale with 96% fidelity and demonstrate adiabatic transfer between different dressed states on the sub-microsecond timescale, fast enough for multiple transfer operations within the lifetime of the short-lived Rydberg states. The techniques developed pave the way for more sophisticated quantum simulation and sensing applications, especially for Rydberg experiments with longer ion strings where ground state cooling is difficult to achieve, or where different Rydberg states are desired.

Keywords: Trapped ions; Rydberg; MW manipulation; adiabatic transfer