Physicists Learn to Superfreeze Antimatter (Hint: Pew Pew!)

It’s not easy. “Hydrogen is just really hard to laser-cool, because of these bloody ultraviolet lasers,” Hangst says. The laser has to be precise at a bunch of different jobs. “You have to really precisely control the frequency so we can do the Doppler shift,” says Takamasa Momose, a chemist at the University of British […]