MilestoneHardwareConfirmed
Quantinuum launches Helios, a 98-qubit trapped-ion quantum computer
Nov 5, 2025
Quantinuum launched Helios, a commercial quantum computer with 98 barium-ion qubits. It reports 99.921% fidelity for two-qubit operations and 48 error-corrected logical qubits (qubits protected by spreading data over several physical ones). Launch customers include Amgen, BMW Group, JPMorganChase and SoftBank.
Why it matters
Error correction needs many qubits with very low error rates; Helios, which Quantinuum calls the most accurate commercial system, puts dozens of error-protected qubits in customers' hands.
Sources (3)
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Quantinuum
Quantinuum Announces Commercial Launch of New Helios Quantum Computer That Offers Unprecedented Accuracy to Enable Generative Quantum AI (GenQAI)
“Quantinuum, the world leader in quantum computing, today announced the launch of Helios, the world’s most accurate general-purpose commercial quantum computer, designed to accelerate quantum computing adoption by enterprises.”
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arXiv (Ransford et al., Quantinuum)
Helios: A 98-qubit trapped-ion quantum computer
“We report on Quantinuum Helios, a 98-qubit trapped-ion quantum processor based on the quantum charge-coupled device (QCCD) architecture.”
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MIT Technology Review
A new ion-based quantum computer makes error correction simpler
“Helios computes with 98 barium ions at a time; its predecessor, H2, used 56 ytterbium qubits.”
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