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Quantum technologies in space

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Quantum technologies in space

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  • Author: Dan Stamper-Kurn, Subhayan Roy Moulik, Sara Mouradian and Kunal Marwaha.
In 2017, we received news that the Micius satellite, built and placed in orbit by the Chinese science community, had produced entangled photon pairs and beamed them to Earth. These photons were received at stations separated by more than 1200 km, enabling quantum key distribution between distant entities on the ground. This achievement represented a new “Sputnik moment.” Just as, generations ago, Sputnik had spooked the United States science and technology community by its persistent radio signal, so too does Micius’ persistent flash of photonic spooky-action Bell states signal a fierce international competition in the deployment of quantum technologies.

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