Monday, August 22, 2016

Chinese Quantum Satellite launched

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. 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.
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