Hybrid Parallel Quantum Key Distribution Protocol

The practical realizations of BB84 quantum key distribution protocol using single-photon or weak coherent states have normally presented low efficiency, in the meaning that most bits sent by Alice are not useful for the final key. In this work, we show an optical setup to improve the transmission ra...

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Bibliographic Details
Published in:arXiv.org 2006-09
Main Authors: Fabio Alencar Mendonca, Rubens Viana Ramos
Format: Article
Language:English
Subjects:
Encryption
Quantum cryptography
Online Access:Get full text
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Summary:The practical realizations of BB84 quantum key distribution protocol using single-photon or weak coherent states have normally presented low efficiency, in the meaning that most bits sent by Alice are not useful for the final key. In this work, we show an optical setup to improve the transmission rate of useful bits putting together two ideas, parallel quantum key distribution and physical encryption using mesoscopic coherent states. The final result is a four time faster quantum key distribution setup.
ISSN:2331-8422