Security of Quantum Key Distribution with Coherent States and Homodyne Detection

2003/12/02 by S. Iblisdir, Gilles Van Assche, G. Van Assche +2 · 2 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph

paper · pdf · doi:10.1103/physrevlett.93.170502

published as Phys. Rev. Lett. 93, 170502 (2004) · 7 pages

arxiv created 2003/12/02 · openalex publication_date 2004/10/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We assess the security of a quantum key distribution protocol relying on the transmission of Gaussian-modulated coherent states and homodyne detection. This protocol is shown to be equivalent to an entanglement purification protocol using CSS codes followed by key extraction, and is thus secure against any eavesdropping strategy.

Citations

• Quantum key distribution using gaussian-modulated coherent states
• Good Quantum Error-Correcting Codes Exist
• Continuous-Variable Quantum Cryptography is Secure against Non-Gaussian Attacks

Cited by

• Teleportation-based continuous variable quantum cryptography
• Security of coherent-state quantum cryptography in the presence of Gaussian noise