Welcome back. Like fusion power, quantum computing is a revolutionary technology that has been in the works for a long time — and perhaps always will be. But top tech figures are now starting to expect that the technology will move from its experimental phase to serious commercial use “not in decades . . . but in years”, as Microsoft chief executive Satya Nadella put it last month. These hopes could of course be dashed — but it’s still worth building an understanding of the world-altering potential of this technology. For today’s newsletter, I spoke to the head of one of the world’s most prominent quantum computing companies, who argues that the quantum age will be with us much sooner, and with much more profound consequences for human welfare, than most of us realise. Buckle up. “If you think you understand quantum mechanics,” the legendary physicist Richard Feynman famously remarked, “you don’t understand quantum mechanics.”
The quip fairly reflects the head-spinning complexity of this field of science, which shows how the universe, at the subatomic level, breaks all the physical rules we’ve learned from observing the world around us.

Full report : PsiQuantum chief executive argues technology could yield breakthroughs against climate change and disease.