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arXiv · 2102.13117

Deterministic Fast Scrambling with Neutral Atom Arrays

Tomohiro Hashizume·Gregory Bentsen·Sebastian Weber·Andrew J. Daley
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Abstract

Fast scramblers are dynamical quantum systems that produce many-body entanglement on a timescale that grows logarithmically with the system size $N$. We propose and investigate a family of deterministic, fast scrambling quantum circuits realizable in near-term experiments with arrays of neutral atoms. We show that three experimental tools -- nearest-neighbour Rydberg interactions, global single-qubit rotations, and shuffling operations facilitated by an auxiliary tweezer array -- are sufficient to generate nonlocal interaction graphs capable of scrambling quantum information using only $O(\log N)$ parallel applications of nearest-neighbor gates. These tools enable direct experimental access to fast scrambling dynamics in a highly controlled and programmable way, and can be harnessed to produce highly entangled states with varied applications.

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Tomohiro Hashizume, Gregory Bentsen, Sebastian Weber, Andrew J. Daley. 2021-05-25. Deterministic Fast Scrambling with Neutral Atom Arrays. https://doi.org/10.1103/physrevlett.126.200603

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