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arXiv · 2512.19856

Quantum information scrambling in strongly disordered Rydberg spin systems

Maximilian Müllenbach·Sebastian Geier·Adrian Braemer·Eduard J. Braun·Titus Franz·Gerhard Zürn·Matthias Weidemüller·Martin Gärttner
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Abstract

Despite the fact that power-law interactions occur in a plethora of physical systems, their many-body dynamics is far less understood than that of nearest-neighbor interacting systems. Here, we study information scrambling in strongly disordered spin systems with power-law interactions via out-of-time-order correlators (OTOCs). Numerically, we find pronounced differences in the dynamical spreading of OTOCs between nearest-neighbor and power-law interacting systems. This deviation persists even for short-range interactions, opposing the common view that these interactions produce dynamics equivalent to the nearest-neighbor case. In a detailed experimental proposal, tailored but not limited to Rydberg tweezer setups, we present a protocol to extract OTOCs in XXZ Heisenberg spin systems with tunable anisotropy and programmable disorder based on currently available techniques.

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Maximilian Müllenbach, Sebastian Geier, Adrian Braemer, Eduard J. Braun, Titus Franz, Gerhard Zürn, Matthias Weidemüller, Martin Gärttner. 2025-12-22. Quantum information scrambling in strongly disordered Rydberg spin systems. https://arxiv.org/abs/2512.19856

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