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In the 21st century, photonic devices, which use light to transport large amounts of information quickly, will enhance or even replace the electronic devices that are ubiquitous in our lives today. But there’s a step needed before optical connections can be integrated into telecommunications systems and computers: researchers need to make it easier to manipulate light at the nanoscale.
Now, a team has done just that by designing the first on-chip metamaterial with a refractive index of zero, meaning that the phase of light can travel infinitely fast.Image credit: Peter Allen, Harvard SEAS
