Semi-device-independent security of one-way quantum key distribution

Journal Article · Fri Jul 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.010302· OSTI ID:22038558

Pawlowski, Marcin ^[1]; Brunner, Nicolas ^[2]

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1. Department of Mathematics, University of Bristol, Bristol BS8 1TW (United Kingdom)
2. H. H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL (United Kingdom)

By testing nonlocality, the security of entanglement-based quantum key distribution (QKD) can be enhanced to being ''device-independent.'' Here we ask whether such a strong form of security could also be established for one-way (prepare and measure) QKD. While fully device-independent security is impossible, we show that security can be guaranteed against individual attacks in a semi-device-independent scenario. In the latter, the devices used by the trusted parties are noncharacterized, but the dimensionality of the quantum systems used in the protocol is assumed to be bounded. Our security proof relies on the analogies between one-way QKD, dimension witnesses, and random-access codes.

• OSTI ID: 22038558
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DATA TRANSMISSION
QUANTUM COMPUTERS
QUANTUM CRYPTOGRAPHY
QUANTUM ENTANGLEMENT