I do believe there have been experiments that have successfully transmitted data via quantum entanglement.

I don't really feel like digging up a source at the moment though.

No data is ever transmitted via quantum entanglement (at least, data from the perspective of the observer). Entanglement is simply when two particles exist in the same quantum state. (Or, to be more precise, in the same superposition of quantum states.) When the state is observed (say, an experimenter examines one of the particles), then the entire wavefunction collapses to a single quantum state. The two particles in the system therefore collapse to the same state instantaneously, but no information can ever be transmitted in this way.

Erm. Isn't it possible to transmit data that way, specifically by affecting the state of one particle, and observing the other?

"Observing" is another way of saying "affecting the state of."

Wait, what? Instantaneously?

Yes. Instantaneously. Always. But this fact cannot be used to transfer information from point A to point B instantaneously. Nothing ever discovered in the weird world of quantum entanglement allows information to exceed the speed of light.

No, I know entanglement changes are instantaneous, I just thought exactly what you're confirming; that you can't communicate with it.

Wuh...? Care to cite a source for that?

Last paragraph under history: http://en.wikipedia.org/wiki/Quantum_entanglement#History

And: http://en.wikipedia.org/wiki/Loopholes_in_Bell_test_experime...

You're citing an article from 1982?

There's been a massive amount experimental work done since the mid 1990s.

http://scholar.google.com/scholar?hl=en&q=+Experimental+...

I said experiments since that landmark 1982 paper...

My understanding is quite limited, but I've believed this to be truth. Anyone know anything about this?

http://en.wikipedia.org/wiki/Elitzur%E2%80%93Vaidman_bomb-te...