Deterministic and efficient quantum cryptography based on Bell’s theorem

2005/01/31 by Zeng-Bing Chen, Zeng‐Bing Chen, Qiang Zhang +5
Computer Science · Mathematics · Physics and Astronomy · #Algorithm #Bell state #Computer network #Computer science #Cryptography #Eavesdropping #Mathematics #Photon #Photon entanglement #Physics #Protocol (science) #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum cryptography #Quantum entanglement #Quantum information #Quantum key distribution #Quantum mechanics #Theoretical computer science #quant-ph

paper · pdf · doi:10.1103/physreva.73.050302

published as Phys. Rev. A 73, 050302(R) (2006) · 4 pages, 1 figure; published version with a note added

arxiv created 2006/05/05 · openalex publication_date 2006/05/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We propose a double-entanglement-based quantum cryptography protocol that is both efficient and deterministic. The proposal uses photon pairs with entanglement both in polarization and in time degrees of freedom; each measurement in which both of the two communicating parties register a photon can establish one and only one perfect correlation, and thus deterministically create a key bit. Eavesdropping can be detected by violation of local realism. A variation of the protocol shows a higher security, similar to the six-state protocol, under individual attacks. Our scheme allows a robust implementation under the current technology.

Citations

• Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?
• Quantum cryptography using any two nonorthogonal states
• Incoherent and coherent eavesdropping in the six-state protocol of quantum cryptography
• Quantum cryptography based on Bell’s theorem
• “All versus Nothing” Inseparability for Two Observers
• On the Einstein Podolsky Rosen paradox
• Secure communication with single-photon two-qubit states