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Quantum Swap Achieves 99.91% Accuracy, Enhances Computing

4/19/2026

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Summary

Story summary

Researchers achieved a quantum swap with 99.91% accuracy using over 17,000 pairs of potassium atoms in a light grid.
The method enables quantum computers to operate amid real-world noise, with gate fidelity remaining stable until noise exceeded 5%.
A doublon allows two qubits to share one site, expanding the system's state options.
The setup enabled entangling gates and outperformed older methods.
The study was published in Nature.

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Story summary

Researchers achieved a quantum swap with 99.91% accuracy using over 17,000 pairs of potassium atoms in a light grid.
The method enables quantum computers to operate amid real-world noise, with gate fidelity remaining stable until noise exceeded 5%.
A doublon allows two qubits to share one site, expanding the system's state options.
The setup enabled entangling gates and outperformed older methods.
The study was published in Nature.