Tech
Scientists Build the World's First Photonic Time Crystal, Cutting Light Losses in Half
An international team from Ecole Polytechnique, the College de France, and Germany's Helmholtz-Zentrum Dresden-Rossendorf has built the world's first all-optical photonic time crystal, a gold-and-semiconductor metamaterial that can be modulated on picosecond timescales. The device cuts terahertz photon losses by more than half, an advance researchers say could open the door to new kinds of ultrafast lasers and telecommunications systems.
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Your Sleeping Brain May Reveal Dementia Risk Years Before Memory Problems Begin, Study Finds
Science · Aug 1 · L1-L4
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