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by lbo 5177 days ago
Nothing that you would consider usable information, referred to as 'classical information', can be transmitted via quantum entanglement. There is 'quantum information' in the state of the entangled particles that can be transferred instantaneously over infinite distance, however attempting the observe this information by any means will destroy it (ie cause the wave function to collapse).

If it was possible to transmit classical information faster than light, this would violate causality as we understand it (you could receive a message that you had been shot before you actually experienced being shot, thus allowing you to prevent yourself from being shot). It's a bit difficult to understand why this is true without a solid understanding of relativity, but you can read up on it a bit here http://en.wikipedia.org/wiki/Special_relativity#Causality_an....

This is all heavy stuff and very non-intuitive, but if you're curious about it and eager to learn I'd highly recommend this tome: http://www.amazon.com/The-Feynman-Lectures-Physics-boxed/dp/...

2 comments

Ditto the Feynman lectures recommendation. Those were incredible icing on the cake of my undergraduate physics course-load, adding significant intuitive meaning and understanding to a subject with much potential but that's taught in a very try manner most of the time.
Great, thanks for this and thanks for the resources. Do you by any chance know of a cheaper method of learning from the Feynman lectures?