Prof. Chee Wei Wong’s work on the silicon-based precision laser oscillators was recently published in Science Advances. This achieves the most precise chip-scale laser clock in the world — till date.  The timing imprecision is down to 270 quintillionths of a second, helpful for analog-to-digital conversion, GPS, navigation, imaging and metrology.

Read More:

http://newsroom.ucla.edu/releases/tiny-optical-frequency-clock-measures-time-accurately-to-270-quintillionths-of-a-second

http://advances.sciencemag.org/content/2/4/e1501489