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Quantum cryptography

The power of independence

Nature Physics volume 14, pages 114–115 (2018)Cite this article

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Device-independent quantum cryptography promises unprecedented security, but it is regarded as a theorist's dream and an experimentalist's nightmare. A new mathematical tool has now pushed its experimental demonstration much closer to reality.

In the past few years, a number of pleasingly wacky ideas proposed by quantum geeks have been turned into experiments and, we are told, much more is yet to come. Indeed, writing in Nature Communications, Rotem Arnon-Friedman and co-authors1 have now shown that existing technology can reach a seemingly impossible scenario where devices of unknown or dubious provenance, even manufactured by enemies, are safely used for secure communication.

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References

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Authors and Affiliations

  1. Mathematical Institute, University of Oxford, Oxford, OX2 6GG, UK

    Artur Ekert

  2. Centre for Quantum Technology, National University of Singapore, Singapore, 117543

    Artur Ekert

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  1. Artur Ekert
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Correspondence to Artur Ekert.

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Ekert, A. The power of independence. Nature Phys 14, 114–115 (2018). https://doi.org/10.1038/nphys4346

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