Light-Based Chips Could Help Slake AI’s Ever-Growing Thirst for Energy

The original version of this story appeared in Quanta Magazine.

Moore’s law is already pretty fast. It holds that computer chips pack in twice as many transistors every two years or so, producing major jumps in speed and efficiency. But the computing demands of the deep-learning era are growing even faster than that—at a pace that is likely not sustainable. The International Energy Agency predicts that artificial intelligence will consume 10 times as much power in 2026 as it did in 2023, and that data centers in that year will use as much energy as Japan. “The amount

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