[Igor Antunov]

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.

The satellite works by the principles of quantum cryptography, similar to existing fiber-based quantum key distribution networks in Europe, China, and the US. By monitoring noise on the network, the system allows distant parties to obtain identical random strings of data without being intercepted by outside parties, providing the raw material for future encrypted communications. Properly applied, the systems resist nearly all conventional forms of decryption, and can be installed by adding specialized routing equipment to existing fiber optic cable.

China’s new satellite would put that same 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. Still, deploying such a system from space remains experimental, and while the launch was successful, there’s no guarantee the quantum equipment will work as planned.

If successful, the satellite will be the first device of its kind, enabling the world’s first trans-continental quantum key distribution network. It’s a project that was proposed to the European Space Agency as early as 2001, the Wall Street Journal reports, although it was unable to gain funding. The professor who first proposed the system, University of Vienna physicist Anton Zeilinger, is now working on the Chinese project.

https://www.nasaspaceflight.com/2016/08 ... satellite/

I'm more interested in this being taken further, and into the realm of fully fledged instantaneous long-distance communication. This is purely an encryption application but it remains exciting nonetheless.

The prospect of a Quantum Telescope is also interesting. Imagine being able to observe aliens on another world light years away from your 6 inch backyard scope.

[Bosnjak]

the satelite is mainly austrian technology.

[Igor Antunov]

Ha ha, nein.

[Atlantis]

the satelite is mainly austrian technology.

You are a real joker, aren't you?

The Chinese have built hundreds of satellites already, but Austria does not build satellites.

Anton Zeilinger is a quantum physicist who is cooperating with the Chinese on this project. International cooperation in aerospace is very common.

[Bosnjak]

Austria is member of the ESA, who have much more experience in space then china, iran shoots also satellites in orbit. today is this cheap and simple.

Do you know Kopenhagen Orbitals?


Quantcommunication is unhackeble, and faster then light (immidietly), but Austria is leading in this. First quantcommunication was some years ago tested in Vienna.

[Rancid]

Igor,

Have you started mining all that land you supposedly have?

[Igor Antunov]

Family went back to Europe to start building units on it. Mining is difficult, takes long time to get permits.

[The Sabbaticus]

Good test case to see if the Chinese can be trusted with such a system. Of course this satellite is just an experimental prototype, but still.