Light-powering, in chips handling linear mathematical operations, extended to nonlinear functions used in training neural networks

https://www.eurekalert.org/news-releases/1080623

"programmable, energy saving... light carrying input dat passes through special semiconductor, 2nd pump beam shines in from above, adjusting reaction... changing shape/ intensity of pump beam controls how signal light absorbed, transmitted, amplified, programming chip to perform different nonlinear functions... > 97% accuracy on simple nonlinear decision, >96% on machine learning standard Iris flower dataset... 4 nonlinear optical equivalent to 20 linear electronic... training AI computers at speed of light"

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