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QI: Fachverband Quanteninformation
QI 3: Quantum Simulation
QI 3.10: Vortrag
Montag, 9. März 2026, 17:45–18:00, BEY/0137
Discrete local dynamics in globally driven dual-species Rydberg atom arrays — Francesco Cesa3,4, Andrea di Fini1,2, •David Korbany1,2, Roberto Tricarico3,4, Hannes Pichler3,4, Hannes Bernien3,5,6, and Lorenzo Piroli1,2 — 1DIFA, Universit`a di Bologna — 2INFN, Sezione di Bologna — 3IQOQI Innsbruck — 4Institute for Theoretical Physics, University of Innsbruck — 5Pritzker School of Molecular Engineering, University of Chicago — 6Institute for Experimental Physics, University of Innsbruck
We present a simple construction to implement a family of one- and two-dimensional discrete dynamics using dual-species Rydberg atom arrays. The discrete dynamics that we consider are special examples of quantum cellular automata (QCA) and include the exact Floquet dynamics of the kicked Ising model, as well as the Trotterized evolution of translation-invariant nearest-neighbor Hamiltonians. In our scheme, one of the two species of atoms represents the physical qubits, while the other species plays an auxiliary role, mediating the interactions. Our construction only requires global driving, with no local addressing of the qubits, and assumes an ideal blockade regime. Importantly, when the inter-species interactions are dominant over the intra-species one, we give a simple argument showing that, both in the one- and two-dimensional case, the deviations from the ideal blockade regime are at least as small as for established single-species implementations in one-dimensional arrays. Finally, we illustrate applications of our constructions in the study of chaotic features of QCA dynamics. Our results may be relevant for near-term experimental implementations.
Keywords: Quantum Cellular Automata; Floquet Dynamics; Rydberg Atoms; Quantum Chaos