This is the fastest random-number generator ever built
"Photons bounce between the curved walls of the bow tie multiple times, before coming out as a scattered beam. The researchers can then capture the light with an ultrafast camera. They recorded the light output of 254 independent pixels, which together produced random bits at a rate of around 250 terabits per second, or 250 terahertz. That’s several orders of magnitude faster than previous such devices, which recorded only one pixel at a time. Their results were reported in Science on 25 February"
A bow-tie-shaped semiconductor (scanning electron microscope image) produces a laser beam with randomly fluctuating intensity. Credit: Kyungduk Kim
Comments
Post a Comment