11–20 of 219 posts
>> Dark fibre, so named because of its composition — a single optical cable with no electronics or network equipment on the alignment — doesn’t interfere with quantum technology Isn't dark fibre either unlit capacity or leased fibres?
So, i stopped reading :)
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.
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 :)
> “The challenge was to keep the photons’ arrival time synchronized to within 10 pico-seconds,”
> “Since these detectors only work at temperatures less than one degree above absolute zero the equipment also included a compact cryostat,” said Tittel.
The dark fiber seems like it was important for synchronizing the clocks. And while they claim this could be used for encryption keys, that is really a roundabout way of saying that very little information was actually transmitted/received, although the article doesn't say exactly how little.
If this technology was refined, you'd just use this system to send secure messages without the need for an encryption key.
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.
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 conclud…
"if you’re a photon, you might want to keep reading." So, i stopped reading :)
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.
Isn't that how teleportation works in, for example, Star Trek?
Teleportation is not possible. Quantum teleportation is the transmission of the exact state of a photon from one place to another. Still, even this happens at less than the speed of light. Otherwise it would violate causality. The media plays fast and loose with terminology either out of plain ignorance or the desire to sell a story.