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arxiv 2210.01636 v2 pith:UKZPN2SP submitted 2022-10-04 quant-ph cs.CR

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

Bruno Huttner , Romain All\'eaume , Eleni Diamanti , Florian Fr\"owis , Philippe Grangier , Hannes H\"ubel , Vicente Martin , Andreas Poppe
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Joshua A. Slater Tim Spiller Wolfgang Tittel Benoit Tranier Adrian Wonfor Hugo Zbinden
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classification quant-ph cs.CR
keywords quantumwithoutlong-rangenodestrustedachieveanalysiscase
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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