Practical quantum cryptography

Alexei Trifonov; Anton Zavriyev; Darius Subacius; Romain Alleaume; Jean-Francois Roch

doi:10.1117/12.542646

24 August 2004 Practical quantum cryptography

Alexei Trifonov, Anton Zavriyev, Darius Subacius, Romain Alleaume, Jean-Francois Roch

Proceedings Volume 5436, Quantum Information and Computation II; (2004) https://doi.org/10.1117/12.542646
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

We report our recent results in development of the secure fiber-optics communication system based upon quantum key distribution (QKD). Emphasize is made on the limitation imposed by the state-of-the-art components crucial for the system performance. We discuss the problem of the interferometer design and highlight the possible security loopholes known. Together with single photon counting performance it places the main restriction on the distance range and the secure key rate of the QKD system based upon the weak coherent pulses. Finally we describe the result of the first test of the system using single photons produced by non-degenerate parametric down-conversion as a source.

Citation Download Citation

Alexei Trifonov, Anton Zavriyev, Darius Subacius, Romain Alleaume, and Jean-Francois Roch "Practical quantum cryptography", Proc. SPIE 5436, Quantum Information and Computation II, (24 August 2004); https://doi.org/10.1117/12.542646

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