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THU: Thursday Contributed Sessions

THU 12: Quantum Thermalization: Contributed Session to Symposium

THU 12.8: Talk

Thursday, September 11, 2025, 16:00–16:15, ZHG105

Observing dynamical localization on a trapped-ion qudit quantum processor — •Gonzalo Camacho¹, Claire L. Edmunds², Michael Meth², Martin Ringbauer², and Benedikt Fauseweh^1,3 — ¹Institute of Software Technology, German Aerospace Center (DLR), Rathausallee 12, 53757 Sankt Augustin, Germany — ²Institut für Experimentalphysik, University of Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria — ³Department of Physics, TU Dortmund University, Otto-Hahn-Str. 4, 44227 Dortmund, German

Recent impressive advances in quantum processors have opened up the possibility to witness emergent dynamical behavior in quantum many-body systems. An outstanding example is the observation of time-crystalline behavior in periodically driven systems breaking the discrete symmetry of the drive. Going beyond qubit-based architectures, in this work we use a trapped-ion qudit quantum processor to study a disorder-free, spin-1 interacting Floquet model that displays time-crystalline behavior protected by symmetry of an effective prethermal Floquet Hamiltonian. We also address the role played by multipartite entanglement in the system dynamics through the Quantum Fisher Information, which can be employed as a proxy to characterize the crossover from dynamically localized to ergodic regimes. These results pave the way for the exploration of emergent non-equilibrium phenomena in higher-dimensional quantum systems.

Keywords: Quantum Simulation; Trapped-ions; Floquet prethermalization; Discrete time crystals; Quantum Fisher Information