The advantage is that electromagnetic light waves oscillate at petaherz frequency. This means that computers in the future could operate at speeds a million times faster than those of today. Scientists have now come one step closer to achieving this goal as they have succeeded in using ultra-short laser impulses to precisely control electrons in graphene.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2018/11/181126123426.htm
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