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A: Fachverband Atomphysik

A 12: Poster I

A 12.34: Poster

Dienstag, 7. März 2023, 16:30–19:00, Empore Lichthof

Exploring the Many-Body Dynamics Near a Conical Intersection with Trapped Rydberg Ions — •Abdessamad Belfakir¹, Filippo Gambetta², Chi Zhang³, Markus Hennrich³, Igor Lesanovsky⁴, and Weibin Li¹ — ¹School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK — ²Phasecraft Ltd, Bristol, United Kingdom — ³Department of Physics, Stockholm University, 10691 Stockholm, Sweden — ⁴Institut für Theoretische Physik, University of Tübingen, 72076 Tübingen, Germany

We demonstrate that trapped Rydberg ions are a platform to engineer conical intersections and to simulate their ensuing dynamics on larger length scales and timescales of the order of nanometres and microseconds, respectively; all this in a highly controllable system. In this context, the shape of the potential energy surfaces and the position of the conical intersection can be tuned thanks to the interplay between the high polarizability and the strong dipolar exchange interactions of Rydberg ions. We study how the presence of a conical intersection affects both the nuclear and electronic dynamics demonstrating, in particular, how it results in the inhibition of the nuclear motion. These effects can be monitored in real time via a direct spectroscopic measurement of the electronic populations in a state-of-the-art experimental setup. We further explore topological dynamics of the spin-phonon coupled dynamics near the conical intersection.