Nature Podcast

How light-based computers could cut AI’s energy needs

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00:45 Increasing the energy efficiency of light-based computersComputer components based on specialised LEDs could reduce the energy consumption of power hungry AI systems, according to new research. AI chips with components that compute using light can run more efficiently than those using digital electronics, but these light-based systems typically use lasers that can be bulky and difficult to control. To overcome these obstacles, a team has developed a way to replace these lasers with LEDs, which are cheaper and more efficient to run. Although only a proof of concept, they demonstrate that their system can perform some tasks as well as laser-based computers.Research Article: Dong et al.News and Views: Cheap light sources could make AI more energy efficient10:36 Research HighlightsThe genes that make roses smell so sweet, and how blocking inflammation could reduce heart injury after a stroke.Research Highlight: How the rose got its iconic fragranceResearch Highlight: Strokes can damage the heart — but reini