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Harvard-led team reports 99.854% neutral-atom gate fidelity

Apr 28, 2026

A Harvard-led team reports 99.854(4)% fidelity for CZ gates, which entangle two neutral-atom qubits, with stable performance for 10 hours. Discarding runs with lost atoms raises the reported fidelity to 99.941(3)%.

Why it matters

More accurate and stable entangling gates help neutral-atom processors run deeper circuits and reduce the burden on error correction.

Simon Evered · Mikhail Lukin · Harvard · MIT · QuEra

See it on the timeline

Neutral-atom entangling gates reach 99.5% fidelity in parallel (Apr 11, 2023)
Harvard-led team combines the key parts of a fault-tolerant atom quantum computer (Nov 10, 2025)

Added Oct 28, 2026. Spotted an error? Tell us and we will review it.

Harvard-led team reports 99.854% neutral-atom gate fidelity

Why it matters

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