Ha. Although, as I understand it, this is a little off
you can’t manipulate one to change the state of the other particle, which might be far away and thus break the maximum speed of information.
Entangled particles do change. If you observe one (e.g. interact with it by a detection device, etc) that property collapses but so does the one on the opposite.
So this would make faster than light communication possible right? Except it wouldn’t because you can’t know if/when the particle you “read” was already collapsed or if you did it and thus “flipped” it’s entangled pair.
So we know that they change instantaneously over a distance and can confirm it. But we have to coordinate with the other endpoint to confirm it.
This means that we can only confirm which flipped which after the fact using methods that are themselves don’t break causality.
Here’s some fantastic PBS space time video on the subject
Ha. Although, as I understand it, this is a little off
Entangled particles do change. If you observe one (e.g. interact with it by a detection device, etc) that property collapses but so does the one on the opposite.
So this would make faster than light communication possible right? Except it wouldn’t because you can’t know if/when the particle you “read” was already collapsed or if you did it and thus “flipped” it’s entangled pair.
So we know that they change instantaneously over a distance and can confirm it. But we have to coordinate with the other endpoint to confirm it.
This means that we can only confirm which flipped which after the fact using methods that are themselves don’t break causality.
Here’s some fantastic PBS space time video on the subject
https://youtu.be/tafGL02EUOA
https://youtube.com/watch?v=msVuCEs8Ydo