China achieves a quantum jump

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Composite photo taken on Dec 10, 2016 shows a quantum communication ground station in Southwest China's Tibet autonomous region. [Photo/Xinhua] "This requires extremely precise measurement," said Wang. "Receiving the entanglement is like catching coins dropped from a plane with a piggy bank." Moreover, quantum entanglements cannot be amplified like radio signals, so scientists still need to overcome disturbances when delivering photon entanglement over thousands of kilometers.

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