Quote:
Originally Posted by nyrath
No, because the "information" is not being transmitted.
You are talking about Bell's Inequality.
A superficial reading of the situation would fool one into thinking this could be used to transmit information faster than light, or from inside a black hole's event horizon to the exterior. Sorry, that turns out not to be the case.
Say you have a source of quantum entangled particles. One particle goes off to your friend at Alpha Centauri. You measure the polarization of the particles pair you have, which instantly changes the polarization of the particle pair at Alpha Centauri. FTL communication, right?
Nope.
What you get at your end is a stream of random numbers. No information there. Your friend at Alpha Centauri has a stream of random numbers. No information there. However, if your friend sends you his stream of random numbers (either at the speed of light via radio, or slower than light by traveling by rocket), then you can compare the two sets of random numbers.
Which will tell you that, yes, sometime in the past, FTL information was transmitted. But the only way to get the information out of this is to compare the two lists, and the only way to compare the lists is to re-send the information slower or at the speed of light. Which sort of defeats the purpose of FTL.
It is even worse with the black hole situation, since it is impossible to transmit the second list out of the event horizon by slower or at the speed of light rates.
So no, you cannot use Bell's Inequality to send information out of an event horizon. |
Alrighty, then. Thanks for that, it explains a lot.
