Geometry-tuned dynamical freezing in large neutral-atom arrays

Strongly driven quantum systems often exhibit heating and loss of coherence, yet under certain conditions can instead display dynamical freezing—a surprising suppression of excitations despite continuous periodic driving. Understanding how such stability arises in interacting many-body settings remains an outstanding challenge, particularly in scalable quantum platforms.

Here we experimentally realize controlled dynamical freezing in large programmable arrays of neutral atoms, observing excitation suppression by over an order of magnitude compared to naive Floquet predictions. By systematically varying drive parameters and system geometry, we uncover regimes of enhanced stability that persist across system sizes up to 100 atoms. The observed robustness highlights the potential of driven neutral-atom systems as a platform for coherent non-equilibrium control and state preservation in large-scale quantum devices.