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

Kavli Affiliate: Wolfgang Tittel

| First 5 Authors: Bruno Huttner, Romain Alléaume, Eleni Diamanti, Florian Fröwis, Philippe Grangier

| 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.

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