China launches world’s first quantum satellite
China successfully launched the world’s first quantum satellite in the northwestern Gobi Desert on Tuesday.
In its two-year mission, the satellite, Quantum Experiments at Space Scale (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.
Quantum communication boasts ultra-high security as a quantum photon can neither be separated nor duplicated. It is hence impossible to wiretap, intercept or crack the information transmitted through it.
The satellite will circle the Earth once every 90 minutes after it enters a sun-synchronous orbit at an altitude of 500 kilometers (310 miles).