Intermediate states in quantum cryptography and Bell inequalities

Journal Article · Sun Jun 01 00:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.062310· OSTI ID:20636537

Bechmann-Pasquinucci, H ^[1]; Gisin, N ^[2]

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1. UCCI.IT, via Olmo 26, I-23888 Rovagnate, Saint Lucia (Italy)
2. Group of Applied Physics, University of Geneva, CH-1211, Geneva 4 (Switzerland)

Intermediate states are known from intercept/resend eavesdropping in the Bennett-Brassard 1984 (BB84) quantum cryptographic protocol. But they also play fundamental roles in the optimal eavesdropping strategy on the BB84 protocol and in the CHSH (Clauser-Horne-Shimony-Holt) inequality. We generalize the intermediate states to an arbitrary dimension and consider intercept/resend eavesdropping, optimal eavesdropping on the generalized BB84 protocol and present a generalized Clauser-Horne-Shimony-Holt inequality for two entangled qudits based on these states.

• OSTI ID: 20636537
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 67; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BELL THEOREM
CORRELATIONS
ENERGY LEVELS
INFORMATION THEORY
INTERMEDIATE STATE
QUANTUM MECHANICS
SECRECY PROTECTION