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A: Fachverband Atomphysik
A 27: Poster III
A 27.30: Poster
Donnerstag, 9. März 2023, 16:30–19:00, Empore Lichthof
Reversible mode shaping in a linear ion crystal via Rydberg excitation — •Robin Thomm1, Harry Parke1, Shalina Salim1, Marion Mallweger1, Natalia Kuk1, Andre Cidrim2, Alan Santos2, and Markus Hennrich1 — 1Stockholm University, Sweden — 2Departamento de Fisica, Universidade Federal de São Carlos, Brazil
We propose an experiment to shape the mode structure of one of the radial modes of a linear ion crystal confined in a linear Paul trap. Single phonons in one radial motional mode of a ground state cooled ion string exhibit a quantum random walk between the ions (Tamura et al. PRL 124, 200501 (2020)). Exciting one or multiple ions into Rydberg state will lead to a change in their trapping frequency, decoupling their motion from the other ions. This way, Ryberg excitation acts as a reversible barrier that can be adjusted by controlling population in the Rydberg state. This allows to restrict the movement of the phonons between the ions on the one hand, and spatially isolate parts of the ion crystals mode structure on the other hand (Li et al. PRL A 87, 052304 (2013)). With the techniques presented it is possible to both simplify and parallelize gate schemes based on common motional modes and to investigate bosonic transport in the presence of (adjustable) barriers.