And here is where the classical intuition starts to fail. No communication is transmitted between entangled particles. The correlation between outcomes was made when the particles were formed and that correlation persists through time until the observation is made. But because of the inherent randomness of quantum mechanical particles, the correlation is *only* seen when the results of the two observations are brought together. You cannot, even in principle, make a communication device using this technique.I thought that was the whole deal, the 'magic' inexplicable part, the separated bits 'knowing' the state of the other despite being separated. Somehow communicating when 'classical' reasoning shouts that no such communication should be possible. Does this mean we can't expect "Quantum Entangled Transceivers" anytime soon? Or <you're killing me here> NEVER?!?!?
Here is the basic problem. Suppose I want to communicate a message to my entangled colleague. Let's say the message is 10010100101001010010. I attempt to modulate the entangles particles on my side, which have the sequence 00011101011110001111. It turns out that the 'message' seen at the far end is essentially the xor of my message and the random quantum bits:
10001001110111011111. Do you see the problem? The 'far message' looks just as random as the quantum sequence. And, in fact, it is. The correlation between the two entangled quantum results, which gives the intended message is ONLY visible when comparing the two quantum sequences, NOT when looking at one end or the other.
No actual information is transferred in entangled systems. The correlation was 'set up' when the particles were formed, but that cannot be used to produce any communication.