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Comment by Rooster61 | Hacker News Reader

The title of the article, while probably not intentional clickbait, is incorrect. Only the quantum state of the photon was "teleported", not the photon itself. The original photon was in fact destroyed, and only the information about its state was transmitted.

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This is the exact meaning of quantum teleportation: https://en.wikipedia.org/wiki/Quantum_teleportation

Changing the title to "Researchers quantum teleport particle..." would make it clearer.

On the other hand, as far as I understand quantum mechanics, there is nothing about the "original" photon that was not teleported/transferred to the new location. It would be impossible to create an experiment that could conclude that the "target" photon was not in fact the original photon. When looking at it this way, it is not so unreasonable to call the process teleportation :)

Does the teleportation happen at the speed of light? Was inspired by Regetti's Startup School talk and have almost zero background :p

Quantum teleportation requires classical communication from the sender to the receiver of the state. Whether the teleportation itself happens faster then the speed of light is up to your interpretation of Quantum mechanics. The important part is that it does not allow information (classical or quantum) to be transmitted faster then light.

No, the information is transferred classically to the location, but copied quantumlly.

OK, we've updated the title. Thanks!

There is no way to distinguish photons from each other. If it has the same state as the original photon, it's the original photon.

> The original photon was in fact destroyed, and only the information about its state was transmitted.

Isn't that how teleportation works in, for example, Star Trek?

https://www.youtube.com/watch?v=nQHBAdShgYI

Funny you say that. When I read this for the first time, I had a flashback of Bones complaining about having his molecules scattered over space :)

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