Optical Lattice Atomic Clock Accuracy Hits A 100 Quadrillionth Of A Second.

Optical lattice clocks are a new type of optical atomic clock. They were proposed in 2001 by University of Tokyo Professor Hidetoshi Katori, and experimentally demonstrated in 2005. Recently, Professor Katori's group accurately kept count of time to 17 decimal places, or a 100 quadrillionth of a second, with an averaging period of 15 minutes. This was the world's first demonstration of an extremely stable optical lattice clock.