communication at 100000 times the speed of light

This is quantum entanglement. A consequence of quantum mechanics which was originally thought to be some kind of problem with the formulation. Einstein called it "spooky action at a distance" as he believed it implied information transfer at faster than the speed of light (which is impossible according to his theory of relativity). Anyway, decades later experiments showed entanglement in practice, and it has become the foundation for quantum computing.

It would be good to understand more about entanglement. I think it will need a larger unifying theory to fully explain it though really.
 
That is a real paradox of faster than light travel, there is a scenario of two people with guns that shoot projectiles faster than the speed of light and somehow it ends up with one of the people getting shot before the other has fired.
 
markyp23 said:
It was communication through a fibre optic wire, you read that right?
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no it wasn't the photons where just sent down two completely separate fiber optic cables to get them apart, they both changed when one changed though.

So you would have a device full of entangled photons in your pc and their pairs somewhere else no cables, no satellites, nada.
 
Anyone know what they mean by "they found that the particles could instantly sense the other´s behavior"

So there was communication, but what kind exactly, the properties of one photon change in a particular way depending on the direction/speed of the other one? wouldnt you need to do lots of expermients and look for a pattern?

Also how do they "entangle" them as such, it isnt just 2 random photons I assume.
 
could instantly sense the other´s behavior
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In other experiments the change in one photon was instantly recognised and mimiked by the other despite the distances. (Action or communication at a distance).
 
starfighter said:
Anyone know what they mean by "they found that the particles could instantly sense the other´s behavior"

So there was communication, but what kind exactly, the properties of one photon change in a particular way depending on the direction/speed of the other one? wouldnt you need to do lots of expermients and look for a pattern?

Also how do they "entangle" them as such, it isnt just 2 random photons I assume.
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Entanglement is the term used when the actions and effects seen with one photon is seen on the second photon, despite a distance and no physical connection to each other.
 
int said:
Entanglement is the term used when the actions and effects seen with one photon is seen on the second photon, despite a distance and no physical connection to each other.
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So for example Photon 1 at point A changes from a sphere shape to a cube and Photon 2 at point B changes at the same time with no reasonable explanation?
 
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