Faster clocks

‘Terahertz’ speed signal processor an important step for optical computing
“The new discovery, made by researchers at Oregon State University (OSU), the University of Iowa and Philipps University in Germany, has identified a way in which nanoscale devices based on gallium arsenide can respond to strong terahertz pulses for an extremely short period, controlling the electrical signal in a semiconductor. The devices can be used as optical switches, replacing wires with emitters and detectors that can function at terahertz speeds.”
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Gizmag

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