Skip to main content Main navigation Home News U of A Researchers Developing World's First Petahertz-speed Phototransistor In Ambient Conditions U of A researchers developing world's first petahertz-speed phototransistor in ambient conditions By Logan Burtch-Buus, University Communications What if ultrafast pulses of light could operate computers at speeds a million times faster than today's best processors? A team of scientists, including researchers from the University of Arizona, are working ...