this post was submitted on 22 Dec 2024
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Nope, quantum entanglement can't enable FTL communication. "Real time" still involves lightspeed lag.
What it does is allows random bits of information to be transmitted in an entangled state. You send an entangled pair of photons, and find out afterwards who got a 1 or a 0 when the photons are observed at either end. They call it 'quantum teleportation' because both ends know what the other got, and the information about who got what can't be intercepted without disrupting the enganglement.
Once they can figure out how to preserve that uncertainty through repeaters, switches, and routers, then we can have a quantum internet that uses encryption based on shared quantum random numbers. It's likely to be necessary soon since quantum computers might only be a few years from breaking current common encryption techniques.
I also want to clarify, we can create asymmetrical encryption algorithms that are quantum resistant but not quantum themselves
Quantum encryption probably won't be in mass use anytime soon, but for extra sensitive applications
Thank you for your explanation.
Yup, definitely. Took the words right out of my mouth.