Quantinuum

Quantinuum is the world's largest integrated quantum computing company, formed in November 2021 through the merger of Honeywell Quantum Solutions and Cambridge Quantum Computing. The company combines Honeywell's industry-leading trapped-ion quantum hardware with Cambridge Quantum's advanced quantum software and algorithms, creating the most complete quantum computing offering in the market.

Quantinuum's trapped-ion quantum computers are consistently recognized as the highest-performing commercially available systems, leading in quantum volume and offering unique capabilities including all-to-all qubit connectivity, mid-circuit measurement, conditional logic, and qubit reuse. The company's H-series systems have achieved two-qubit gate errors less than 1x10-3 across all pairs of qubits, setting the industry standard for accuracy.

In November 2025, Quantinuum launched Helios, its third-generation quantum computer featuring 98 physical qubits and delivering 48 logical error-corrected qubits. Helios represents the world's most accurate general-purpose commercial quantum computer, with single-qubit gate fidelity of 99.9975% and two-qubit gate fidelity of 99.921%. The system includes a first-of-its-kind real-time control engine and introduces Guppy, a modern Python-based programming language for hybrid quantum-classical computing.

Quantinuum serves enterprise customers including Amgen, BMW Group, JPMorgan Chase, and SoftBank Corp., providing solutions for applications in drug discovery, materials science, financial services, and cybersecurity. The company has established a global presence with headquarters in Cambridge, UK, and Broomfield, Colorado, along with partnerships and facilities across the US, UK, Asia, and the Middle East.