Expanding the Neutral Atom Gate Set: Native iSWAP and Exchange Gates from Dipolar Rydberg Interactions

• URL: http://arxiv.org/abs/2512.05037v1
• Date: Thu, 04 Dec 2025 17:55:19 GMT
• Title: Expanding the Neutral Atom Gate Set: Native iSWAP and Exchange Gates from Dipolar Rydberg Interactions
• Authors: Pedro Ildefonso, Andrew Byun, Aleksei Konovalov, Javad Kazemi, Michael Schuler, Wolfgang Lechner,
• Abstract summary: iSWAP gate protocols exceed fidelities of $99.9%$ under realistic experimental conditions.<n>Results pave the way for expanding the neutral atom gate set beyond typical Rydberg blockade-based entangling gates.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present a native realization of iSWAP and parameterized exchange gates for neutral atom quantum processing units. Our approach leverages strong dipole-dipole interactions between two dipole-coupled Rydberg states, and employs optimal control techniques to design time-efficient, high-fidelity gate protocols. To minimize experimental complexity, we utilize global driving terms acting identically on all atoms. We implement a noise-aware pulse selection strategy to identify candidate protocols with reduced susceptibility to certain noise sources, then analyze their performance under realistic noise sources -- including atomic motion, Rydberg decay, and experimentally motivated laser phase and intensity noise. For a $^{88}$Sr-based architecture, we demonstrate fast iSWAP gate protocols which exceed fidelities of $99.9\%$ under realistic experimental conditions. These results pave the way for expanding the neutral atom gate set beyond typical Rydberg blockade-based entangling gates.

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