Determining influence of four-wave mixing effect on quantum key distribution

We consider the possibility of multiplexing the classical and quantum signals in a quantum cryptography system with optical fiber used as a transmission medium. If the quantum signal is located at a frequency close to the frequency of classical signals, a set of nonlinear effects such as FWM (four-w...

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Published inJournal of physics. Conference series Vol. 541; no. 1; pp. 12066 - 6
Main Authors Vavulin, D N, Egorov, V I, Gleim, A V, Chivilikhin, S A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2014
Subjects
Error analysis
Four-wave mixing
Impact analysis
Multiplexing
Nonlinearity
Optical fibers
Physics
Quantum cryptography
Raman scattering
Raman spectra
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Summary:We consider the possibility of multiplexing the classical and quantum signals in a quantum cryptography system with optical fiber used as a transmission medium. If the quantum signal is located at a frequency close to the frequency of classical signals, a set of nonlinear effects such as FWM (four-wave mixing) and Raman scattering is observed. The impact of four-wave mixing (FWM) effect on error level is described and analyzed in this work in case of large frequency diversity between classical and quantum signals. It is shown that the influence of FWM is negligible for convenient quantum key distribution.
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ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/541/1/012066