Aliens could send us interstellar quantum messages using X-rays

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Quantum communication know-how might enable for info to be securely despatched via interstellar area with out being disrupted by gravity or photo voltaic winds



Physics



1 June 2022

An observatory monitoring satellites with a laser

Dmitry Evteev/Alamy

If aliens needed to ship us messages from 30 mild years away, their greatest wager could also be to make use of X-rays and quantum know-how.

On Earth, researchers have beforehand encoded info into the quantum states of particles of sunshine, or photons. Utilizing the photons’ particular properties, they’ve transmitted that info securely. Analysis groups have despatched the information to different labs all over the world – as a proof of idea for a quantum internet – and to satellites orbiting Earth.

Arjun Berera and Jaime Calderón-Figueroa …



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