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by krastanov
3041 days ago
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While the image is correct, your statement would be a bit misleading to novices: You can not transfer the state of the qubit over a classical channel. You need both a classical channel and entanglement. Or in other words: a bit can be send over a classical communication channel (by copying it), but to transmit a qubit (which can not be copied due to its quantum nature), you either need to carry the physical qubit over, or use entanglement together with classical communication. |
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Plus we get to keep cause and effect ordered, as a little bonus.