A global quantum internet?

Interesting paper here describing a potential system for creating caches of quantum entangled photon pairs separated by very large distances. It wasn’t all that long ago that the concept of entanglement seemed like science fiction and, in any case, entanglement was so fragile that things de-cohered in a very short space of time. Now it seems like it may be possible to store widely separated entangled pairs for at least long enough (> 67mS) to be useful for things like quantum key distribution.

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