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Cake day: June 13th, 2023

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  • I read it. Doesn’t mention FTL, because that’s not a possibility for actually transmitting info.

    Edit: I think the way these quantum encryption systems work is that basically the photons (and I assume it’s polarization being measured) become the encryption key to a message that is sent conventionally.

    Like the sender generates a bunch of entangled photons, sends the paired ones to the recipient, measures their photons and uses the results to encrypt the message, the receiver measures theirs and gets the same results, the sender sends the encrypted message over email or whatever, and the recipient has the same key because of entanglement.
    Meanwhile an eavesdropper measuring the photons would mess them up for the recipient so the message wouldn’t decrypt.