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We Just Got a Major Step Closer to Teleporting Images Using Only Light

• gus_massa 3y ago
  The report gives a very bad explanation of quantum teleporting. It's imposible to send the the info from B to A, if you only send something from A to B. In particular, the nice graphic showing how the fingerprint is send from the client to the bank has no arrow in the client->bank direction in the PR, but in the research paper it has one (Fig 1). I've seen it before, so I guess sciencealert copy&pasted a bad PR. This is wrong: > However, it wasn't teleportation in the standard sense. While the information itself wasn't transferred (like it would be over an internet connection for example), the careful measurement of a specific feature on one of the entangled particles immediately affects the related feature on the other, effectively transmitting its quantum state. This is correct: > By then transferring actual details of the original measured particle the old-fashioned non-teleporting way, it's possible to lock that state in place, while the original state is destroyed. While it might not be a faster way to send information, it does create a handy quantum watermark for any information you don't want anybody else to see.