The data-carrying light waves in optical fibers have either horizontal or vertical polarities. Both types of waves are easily processed in today’s millimeter-scale photonic devices, but polarization differences may lead to signal loss in future micrometer-scale devices on chips. This submicrometer structure from MIT’s Research Laboratory of Electronics can be etched into silicon. Light enters a waveguide and is split into horizontal and vertical components. Vertical beams are rotated to horizontal for processing and later recombined.
Meta has built a massive new language AI—and it’s giving it away for free
Facebook’s parent company is inviting researchers to pore over and pick apart the flaws in its version of GPT-3
The gene-edited pig heart given to a dying patient was infected with a pig virus
The first transplant of a genetically-modified pig heart into a human may have ended prematurely because of a well-known—and avoidable—risk.
Saudi Arabia plans to spend $1 billion a year discovering treatments to slow aging
The oil kingdom fears that its population is aging at an accelerated rate and hopes to test drugs to reverse the problem. First up might be the diabetes drug metformin.
Yann LeCun has a bold new vision for the future of AI
One of the godfathers of deep learning pulls together old ideas to sketch out a fresh path for AI, but raises as many questions as he answers.
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