Quantum Messages Across the Milky Way: X-ray Photons, Decoherence, and the Prospect of Interstellar Communication
To the point
Arjun Berera and Jaime Calderón Figueroa from the University of Edinburgh say X-ray photons could carry quantum information across the Milky Way with minimal decoherence, suggesting intelligent aliens might use quantum communication (even quantum teleportation) and that we could look for signals that combine quantum and classical transmissions.
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