The irony was stark. On Thursday, the world’s largest technology expo by floor space, CES 2025, hosted a half-day programme called “Quantum Means Business”.  It promised to convene “the brightest quantum minds” and showcase “breakthroughs that were once confined to science fiction” under the grandiose banner of the World Quantum Congress.

Yet, on the show floors, replete with new computer chips, robots and AI infused into anything that could take an infusion, quantum was almost nowhere to be seen. This shouldn’t come as a surprise, as few outside rarefied research circles even understand quantum computing: an advanced form of computing based on the arcane principles of quantum physics, which allows particles to exist in different states simultaneously, rather than being in just one state until observed...

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