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South Africa and China establish record-breaking 12,900 km ultra-secure quantum satellite link.
(www.eurekalert.org)
this post was submitted on 20 Mar 2025
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Very cool, I wonder if a quantum link like this needs a clear line of sight. What would be the limits of quantum communication like this? It would be amazing to be able to achieve real time communication between planetary bodies for example.
Quantum entanglement/teleportation does not mean information transmission exceeds the speed of light. You're still limited to sending entangled particles to your destination following the laws of physics. You cannot transmit information via this phenomenon.
What you can use this for is transmission integrity. Where you will know if an outside observer intercepted your transmission then sent it on its way to the destination. This is more commonly known as a man in the middle attack (MitM).
Adversary in the middle is the updated terminology. Not just because sex, but also bots and AI.
Ooo thank you, I'm definitely out of date by now