Quantum communication offers many advantages over classical methods, but it has been limited to sending signals across a few hundred kilometres. Two studies overcome this limitation. See Article p.43 & Letter p.70
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Diamanti, E. Quantum signals could soon span the globe. Nature 549, 41–42 (2017). https://doi.org/10.1038/549041a
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DOI: https://doi.org/10.1038/549041a
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