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Quantum key distribution breaking limits

The race of distributing provable-secure encryption keys by means of quantum key distribution over ever-increasing distances is on. A surprising development has now led to a new result that may affect how we build future quantum networks.

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Fig. 1: Experimental set-up of twin-field QKD by Minder, Pittaluga and colleagues.

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Correspondence to Wolfgang Tittel.

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Tittel, W. Quantum key distribution breaking limits. Nat. Photonics 13, 310–311 (2019). https://doi.org/10.1038/s41566-019-0424-4

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