The MIT Technology Review reports that China has successfully created the first Earth-to-space quantum network, which will allow scientists to start experimenting with entanglement, cryptography, and teleportation.
Back in the 1990s, scientists realized they could use this link to transmit quantum information from one point in the universe to another. The idea is to “download” all the information associated with one photon in one place and transmit it over an entangled link to another photon in another place.
This second photon then takes on the identity of the first. To all intents and purposes, it becomes the first photon. That’s the nature of teleportation and it has been performed many times in labs on Earth.
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