Quantum Computing
Evergreen explainer · neutral data, no opinion

Logical qubits

Current verified value
96
QuEra / Harvard · fault-tolerant, 2026
Press release · 2026-01 Human-verified

What it measures

Error-corrected qubits that actually do useful work. The number that matters — and the one most often confused with physical qubits.

Glossary →

History

104846855442023-122026-01

By actor

QuEraneutral atom, fault-tolerant (2026)96
Quantinuumtrapped ion, entangled (2025)50

Goal / baseline

now96
goal≈1,000,000

logical qubits for fault-tolerant cryptanalysis

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