Long-range QKD without trusted nodes is not possible with current technology

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 str...

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Bibliographic Details
Published innpj quantum information Vol. 8; no. 1; pp. 1 - 5
Main Authors Huttner, Bruno, Alléaume, Romain, Diamanti, Eleni, Fröwis, Florian, Grangier, Philippe, Hübel, Hannes, Martin, Vicente, Poppe, Andreas, Slater, Joshua A., Spiller, Tim, Tittel, Wolfgang, Tranier, Benoit, Wonfor, Adrian, Zbinden, Hugo
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 09.09.2022
Nature Publishing Group
Nature
Nature Portfolio
Subjects
639/766/259
639/766/483/481
Algorithms
Classical and Quantum Gravitation
Comment
Cryptography
Physics
Physics and Astronomy
Protocol
Quantum Computing
Quantum Field Theories
Quantum Information Technology
Quantum Physics
Reconciliation
Relativity Theory
Satellites
Spintronics
String Theory
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Summary: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.
ISSN:2056-6387
2056-6387
DOI:10.1038/s41534-022-00613-4