The Quantum Internet Will Blow Your Mind. Here’s What It Will Look Like

This article appeared in the November 2020 issue ofCall it the quantum Garden of Eden. Fifty or so miles east of New York City, on the campus of Brookhaven National Laboratory, Eden Figueroa is one of the world’s pioneering gardeners planting the seeds of a quantum internet. Capable of sending enormous amounts of data over vast distances, it would work not just faster than the current internet but faster than the speed of light — instantaneously, in fact, like the teleportation of Mr.

Next, Figueroa hopes to teleport his quantum-based messages through the air, across Long Island Sound, to Yale University in Connecticut. Then he wants to go 50 miles east, using existing fiber-optic cables to connect with Long Island and Manhattan. U.S. efforts have lately been given a boost by the U.S. Department of Energy’s announcement in January that it would spend as much as $625 million to fund two to five quantum research centers. The move is part of the U.S. National Quantum Initiative signed into law by President Donald Trump on Dec. 21, 2018.

But by the early 20th century, scientists had confirmed that light also came in particles — what physicist Gilbert N. Lewis called photons, or quanta. And incredibly, researchers found that even when single photons of light were sent flying one at a time at the double-slit panel, the interference pattern still appeared on the other side. Each particle, they realized, was also a wave, spread out like a schmear of cream cheese, and so traversed both slits simultaneously, thereby interfering with .

But how? Other quantum labs freeze their stay-at-home photons to near-absolute zero as a way of tapping the brakes. Figueroa’s innovation, by contrast, works at room temperature: an inch-long glass tube containing a fog of trillions of rubidium atoms. That first morning when I visit Figueroa’s lab, he puts one of these tubes in my hand.

“The idea has by now been around for 20 years,” says Mikhail Lukin, a leading quantum theoretician and experimentalist at Harvard University. “Up to now, no one has succeeded in building one capable of being used in a practical application. As far as I understand, that’s what [Figueroa]’s group is trying to do.”

The only way information can travel faster than light is if it has been distributed before it is disclosed. It shouldn't surprise you that the quantum industry is selling smoke and mirrors, as so many other new industries have. But, that's how you sell magazines, too. Basically,…

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