Hacker News new | ask | show | jobs
by thrw42A8N 595 days ago
Entanglement doesn't mean information actually travels from point A to point B. Imagine it like tearing paper into 2 pieces without looking at it. Then both pieces are taken away. And then you look at the exact shape of the cut - and you know that the other piece of paper mirrors it exactly. There was no actual travel of information, you had it the whole time - you just looked at it when it was convenient. Quantum entanglement is nicer than that because it can also guarantee single usage (or the key doesn't work) but it's not a magical telecommunication channel, you still need radio/laser/...
1 comments

Thanks for the paper analogy. First, I don't agree that if we bring the other half of the paper away that no information has traveled. What else is the shape of the cut than information? Second, do we know that no dual of entanglement exists, meaning that we start from one piece of the paper (far way) that we can somehow select and (re-)create the other half "here", thus being able to see its shape "here", all this not subject to the laws of mass physics? Sure this is all just thinking going on in my mind and I'm really not an expert in all these things; not at all. I just have questions that sometimes provoke ideas; which might be naive (due to lack of information).