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Entangled diamonds vibrate together

nature.com

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Re: Entangled diamonds vibrate together

#3
> entangled photons of light have been used to transmit information in such a way that any interception is detectable

Wrong. Information is not transmitted via the entangled photons. They're used to build up random data, which is guaranteed to correspond between the two endpoints and thus can be used as an encryption key (for a one-time pad, etc). Entanglement can certainly not be used to transmit information.

Re: Entangled diamonds vibrate together

#4

How does not knowing which diamond has the phonon make it quantum entanglement?

Because the phonon was initiated by a single photon, which, until observed, cannot be said to have traveled to one diamond or the other. See http://en.wikipedia.org/wiki/Double-slit_experiment .