To encrypt, send a photon to the Remote Site, entangled with one at Home. (If the Enemy detects the entangled photon, it can’t be sent again, entangled, because of the Uncertainty Principle.) Then send the “message” photon, and read it by teleportantion with the entangled photon
To encrypt, send a photon to the Remote Site, entangled with one at Home. (If the Enemy detects the entangled photon, it can’t be sent again, entangled, because of the Uncertainty Principle.) Then send the “message” photon, and read it by teleportantion with the entangled photon
Similarly, you can make “quantum money” that cannot be counterfeited. This was invented by a Columbia student, Stephen Wiesner many years ago, and received more notice recently with the rise of quantum communications and computing. It allows secure Quantum Encryptation without Teleportation.