What is that, exactly?
China's successful launch of the world's first quantum satellite was "very exciting" and can help conduct experiments that may lead to "much more secure" quantum communications, a U.S. quantum expert said.
China said the 600+ kilogram QUESS, nicknamed "Micius," is expected to circle the Earth once every 90 minutes after it enters a sun-synchronous orbit at an altitude of 500 kilometers.
In its two-year mission, QUESS is designed to establish "hack-proof" quantum communications by transmitting uncrackable keys from space to the ground, and provide insights into the strangest phenomenon in quantum physics -- quantum entanglement.
Physics.org explains:
Quantum communications use subatomic particles to securely communicate between two points. A hacker trying to crack the message changes its form in a way that would alert the sender and cause the message to be altered or deleted.
Researchers around the world have successfully sent quantum messages by land. But a true satellite-based network would make it possible to send quickly encrypted messages in an instant around the world and open the door to other possible uses of the technology.Full article:http://phys.org/news/2016-08-china-quantum-satellite-major-space.html#jCp
More on this hocus pocus:https://techcrunch.com/2016/08/16/china-launches-the-first-quantum-communications-satellite-and-what-is-that-exactly/
http://www.space.com/33760-china-launches-quantum-communications-satellite.html
http://www.wsj.com/articles/chinas-latest-leap-forward-isnt-just-greatits-quantum-1471269555
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