Shares of quantum-computing companies that skyrocketed in 2024 collapsed by double digits Wednesday after Nvidia CEO Jensen Huang said practical uses for quantum computing were more than a decade away.

D-Wave Quantum CEO Alan Baratz said Nvidia’s Jensen Huang is “dead wrong” about quantum computing after comments from the head of the chip giant spooked Wall Street on Wednesday.

Of all the futuristic technologies being explored by big technology companies and start-ups, quantum computing is one of the most exciting. There are some types of computational problems that are simply impossible for even the world's most powerful supercomputer to solve.