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Optics and Spectroscopy

Quantum transmission of information with the help of subcarrier frequency. Application to quantum cryptography

Yu. T. Mazurenko, Jean-Marc Mérolla, J.-P. Goedgebuer

Published Feb 1, 1999• 5 citations
OpenAlex

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Coherent state quantum cryptography protocols are of interest due to their easy implementation. However, the security proof of such protocols against all attacks can be tricky because of the attenuation in the communication channel that can be exploited by an eavesdropper. In this work, an attack on the subcarrier wave quantum cryptography protocol has been built, which generalizes the photon number splitting attack. The efficiency of the attack has been analyzed, in particular, for the case where the eavesdropper does not have quantum memory.