Security proof for quantum key distribution using qudit systems

Security proof for quantum key distribution using qudit systems

We provide security bounds against coherent attacks for two families of quantum key distribution protocols that use d-dimensional quantum systems. In the asymptotic regime, both the secret key rate for fixed noise and the robustness to noise increase with d. The finite key corrections are found to b...

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Veröffentlicht in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2010-09, Vol.82 (3), Article 030301
Hauptverfasser: Sheridan, Lana, Scarani, Valerio
Format: Artikel
Sprache:eng
Schlagworte:
ASYMPTOTIC SOLUTIONS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMMUNICATIONS
CORRECTIONS
CRYPTOGRAPHY
DATA TRANSMISSION
DISTRIBUTION
INFORMATION
MATHEMATICAL SOLUTIONS
MECHANICS
NOISE
QUANTUM CRYPTOGRAPHY
QUANTUM INFORMATION
QUANTUM MECHANICS
QUANTUM STATES
SECRECY PROTECTION
SECURITY
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Beschreibung
Zusammenfassung:We provide security bounds against coherent attacks for two families of quantum key distribution protocols that use d-dimensional quantum systems. In the asymptotic regime, both the secret key rate for fixed noise and the robustness to noise increase with d. The finite key corrections are found to be almost insensitive to d < or approx. 20.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.82.030301