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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 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.

s_kilk 10y ago
> 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 https://www.youtube.com/watch?v=nQHBAdShgYI
- Rooster61 10y ago
  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 :)
maggit 10y ago
This is the exact meaning of quantum teleportation: https://en.wikipedia.org/wiki/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 :)
- turnip1979 10y ago
  Does the teleportation happen at the speed of light? Was inspired by Regetti's Startup School talk and have almost zero background :p
  - aparent 10y ago
    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.
  - dogma1138 10y ago
    No, the information is transferred classically to the location, but copied quantumlly.
- sctb 10y ago
  OK, we've updated the title. Thanks!
empath75 10y ago
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.

s_kilk 10y ago

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

Rooster61 10y ago
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 :)

maggit 10y ago

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

turnip1979 10y ago
Does the teleportation happen at the speed of light? Was inspired by Regetti's Startup School talk and have almost zero background :p
- aparent 10y ago
  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.
- dogma1138 10y ago
  No, the information is transferred classically to the location, but copied quantumlly.
sctb 10y ago
OK, we've updated the title. Thanks!

empath75 10y ago

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.