The question of quantum supremacy—the point at which quantum computers can demonstrate a tangible advantage over classical systems—is difficult, to say the least.

When Google claimed it had achieved quantum supremacy in 2019, it was almost immediately called out by IBM. Big Blue disputed several of the claims Google made in the paper, estimating that a classical system could produce results with higher reliability than Google achieved with a 53 superconducting quantum computer, and could do so in just 2.5 days – not the 10,000 years as researchers had claimed.

This week, Quantinuum looked at the question again and boasted that it had achieved a more than 100x improvement over Google's 2019 results.

If you're not familiar, the startup was formed as part of a merger between the UK's Cambridge Quantum and Honeywell Quantum Solutions in the US.