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arXiv · 2210.01636

Long-Range QKD without Trusted Nodes is Not Possible with Current Technology

Bruno Huttner·Romain Alléaume·Eleni Diamanti·Florian Fröwis·Philippe Grangier·Hannes Hübel·Vicente Martin·Andreas Poppe·Joshua A. Slater·Tim Spiller·Wolfgang Tittel·Benoit Tranier·Adrian Wonfor·Hugo Zbinden
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Abstract

A recently published patent (https://www.ipo.gov.uk/p-ipsum/Case/PublicationNumber/GB2590064) has claimed the development of a novel quantum key distribution protocol purporting to achieve long-range quantum security without trusted nodes and without use of quantum repeaters. Here we present a straightforward analysis of this claim, and reach the conclusion that it is largely unfounded.

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Bruno Huttner, Romain Alléaume, Eleni Diamanti, Florian Fröwis, Philippe Grangier, Hannes Hübel, Vicente Martin, Andreas Poppe, Joshua A. Slater, Tim Spiller, Wolfgang Tittel, Benoit Tranier, Adrian Wonfor, Hugo Zbinden. 2022-10-04. Long-Range QKD without Trusted Nodes is Not Possible with Current Technology. https://doi.org/10.1038/s41534-022-00613-4

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