4 ms·

No, it hasn't. Also, re: this image[0], I thought entanglement couldn't be used to send information? Isn't this complete nonsense? [0] https://media.nature.co

• tomonl 9y ago
  The image is correct. The information is sent over a classical channel, not using entanglement.
  • krastanov 9y ago
    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.
    • IntronExon 9y ago
      The essence of the issue for many, who seem to equate entanglement with FTL is that a classical channel is required. Without that, you’re just sending noise over your quantum channel. Plus we get to keep cause and effect ordered, as a little bonus.
• red75prime 9y ago
  The last section tells that you need to transmit classical information to make sense of entangled particle measurement. Entanglement serves as a secure channel. If you have two entangled coins, you know that the second coin came up heads, if your coin came up tails. You can't transmit information that way, because if you'll force your coin to land heads, you'll break entanglement. But you can use the results of coin flips as a cipher.