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China Launches World's First Quantum Communications Satellite (theverge.com)
hackingbear quotes a report from The Verge: China's quantum network could soon span two continents, thanks to a satellite launched earlier today. Launched at 1:40pm ET, the Quantum Science Satellite is designed to distribute quantum-encrypted keys between relay stations in China and Europe. When working as planned, the result could enable unprecedented levels of security between parties on different continents. China's new satellite would put that same fiber-based quantum communication system to work over the air, utilizing high-speed coherent lasers to connect with base stations on two different continents. The experimental satellite's payload also includes controllers and emitters related to quantum entanglement. The satellite will be the first device of its kind if the quantum equipment works as planned. According to the Wall Street Journal, the project was first proposed to the European Space Agency in 2001 but was unable to gain funding.
This has been proven to work with fibre optic cable. You can't observe a photon without affecting it, and that observation is then detectable. The only difference is that now they are using lasers through the air rather than through fibre optic cables.
It's not perfect, it's still possible that ways will be found to observe the light in a way that the tamper detection doesn't pick up on, but turning that into something you can reasonably hide in a position to intercept those photons is a not insignificant challenge.
const int one = 65536; (Silvermoon, Texture.cs)
SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
"The portion of its population that is still in poverty exceeds the entire population of the United States"
The Chinese cohort of anything exceeds the entire population of the United States. This is also true of the number of Chinese brains being applied to science/tech problems of every kind.
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