Honeywell says it will launch a quantum computer within three months with a quantum volume of at least 64, making it the world's most powerful quantum computer
Context & Ripple Effects
Honeywell's announcement lands mid-race: IBM had just put a 53-qubit machine up for external use as the largest available, and Microsoft was preparing Azure Quantum access to three prototype machines including Honeywell's. By staking the crown on quantum volume — a quality-of-operations metric — rather than raw qubit count, Honeywell is changing what 'most powerful' means.
The bet paid out within the year: the delivered system became the Model H1 at quantum volume 128, and the business was later folded into a majority-owned joint venture with Cambridge Quantum. This March 2020 claim is the founding move of that arc.
First-order effects
- IBM loses the 'world's most powerful quantum computer' title it held since its 53-qubit launch, and must now answer on quantum volume rather than qubit count.
- Select Azure cloud customers get access to hardware that claims top performance through Microsoft's Azure Quantum program.
Second-order effects
- Competitors are pushed to compete on fidelity and error rates instead of headline qubit counts, making quantum volume the de facto scoreboard for vendor comparisons.
- Honeywell's subsequent subscription offering for the Model H1 shows the commercial model following the hardware: usage-based access rather than machine sales.
Third-order effects
- If quality metrics keep displacing qubit counts as the yardstick, quantum computing consolidates around fewer, better-engineered platforms — the path Honeywell took by merging its unit into a dedicated venture with outside software capability.
- Industrial conglomerates entering via acquisitions and JVs, not labs, points toward quantum becoming an enterprise infrastructure market sold through cloud subscriptions.
The trend: Quantum computing competition is shifting from raw qubit counts to quality metrics like quantum volume, with industrial players building standalone, subscription-based businesses around their machines.