For “very useful quantum computers” to emerge, a 15-year timeline is “on the early side,” but 30 years is “on the late side,” Nvidia CEO Jensen Huang said in a Q&A with financial analysts on Tuesday. D-Wave’s stock fell as much as 51.3 per cent in Wednesday trading. (The Logic)

Talking point: Quantum computing stocks ended last year on a tear. Burnaby, B.C.-founded D-Wave and major investor the Public Sector Pension Investment Board both cashed in on the surge. But the technology remains of limited current practical use, and companies in the sector aren’t earning meaningful revenue yet. IonQ and Rigetti Computing also plummeted as much as 47.7 and 51.3 per cent respectively following Huang’s comments. Nvidia is working with quantum computing firms, providing high-speed processing that does the things that classical computers can still do best.