They are cobbling lasers that spit out pulses a quadrillionth of a second long together with chambers that chill atoms to a few millionths of a degree above absolute zero.

• 他们得把雷射与空腔（chamber）拼凑起来；这些雷射是宽度仅千兆分之一秒（10-15秒）的脉冲，而空腔能将原子冷却至只比绝对零度高几百万分之一度。