Long-distance quantum key distribution gets real

A ‘twin-field’ repeater-less protocol has enabled an experimental demonstration of secure quantum key distribution over a 511-km long-haul optical fibre link.

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Bibliographic Details
Published inNature photonics Vol. 15; no. 8; pp. 554 - 556
Main Authors Lim, Charles C.-W., Wang, Chao
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 01.08.2021
Nature Publishing Group
Subjects
639/766/400/482
639/766/483/481
Applied and Technical Physics
Lasers
News & Views
news-and-views
Noise
Optical fibers
Phosphorus
Photonics
Physics
Physics and Astronomy
Protocol
Quantum cryptography
Quantum Physics
Scientific imaging
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Summary:A ‘twin-field’ repeater-less protocol has enabled an experimental demonstration of secure quantum key distribution over a 511-km long-haul optical fibre link.
ISSN:1749-4885
1749-4893
DOI:10.1038/s41566-021-00848-1