Bringing atoms to a standstill: Miniaturizing laser cooling

Scientists have miniaturized the optical components required to cool atoms down to a few thousandths of a degree above absolute zero, the first step in employing them on microchips to drive a new generation of super-accurate atomic clocks, enable navigation without GPS, and simulate quantum systems.

source https://www.sciencedaily.com/releases/2021/01/210121163138.htm