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Here's the link: https://sciencebulletin.org/researchers-develop-way-to-control-speed-of-light-send-it-backward/

Here's the line that makes no sense to me: Abouraddy and study co-author Esat Kondakci demonstrated they could speed a pulse of light up to 30 times the speed of light...

Need some help on this one.

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You're right, it makes no sense.

It's bad reporting, and I'd go so far as to say that the researchers involved failed to make it clear that what they demonstrated was not a way to make anything actually go faster than $c$. What they showed is crudely analogous to standing on the Earth and zig-zagging a laser beam back and forth across the moon a few hundred times per second. Sure, the point where the beam illuminates the moon moves some tens of times faster than $c$. But nothing is conveyed from point A to point B on the moon in that scenario. Instead, light is conveyed from the laser on Earth to point A and to point B. Make light travel backwards? Easy: just sweep the laser from B to A.

In the paper, the authors do say "The group velocity here is the speed of the wave packet central spatio-temporal intensity peak, whereas the wave packet energy remains spread over its entire spatio-temporal extent.". Their definition would equally well describe a laser spot flying across the Moon. It definitely does not describe a situation where energy flows from point A to point B.

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