Trapped-Ion · Company-stated targets
Quantinuum Quantum Computing Roadmap
Helios (November 2025) ships 50 error-corrected logical qubits at an industry-best 2:1 physical-to-logical encoding. In September 2026, Quantinuum validated its Helix error-correction architecture on Helios, the stated foundation for Apollo. In October 2026, Helios achieved 99.9995% logical-memory fidelity—five uncorrectable errors per million operations—with each tested code-distance increase reducing memory errors by an average factor of 12 and logical-gate errors by an average factor of 9.
Source checked · Targets are company ambitions, not independent forecasts.
Current system and qubit counts
Current system
Helios
Physical qubits
98 physical trapped-ion qubits with all-to-all connectivity.
Logical qubits
50 error-corrected logical qubits at a 2:1 physical-to-logical encoding ratio.
Quantinuum's stated targets
Physical and logical qubit goals are labeled separately. A target date does not mean the milestone has been independently achieved.