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arXiv · 1502.02249

Universally-composable finite-key analysis for efficient four-intensity decoy-state quantum key distribution

Haodong Jiang·Ming Gao·Bao Yan·Weilong Wang·Zhi Ma
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Abstract

We propose an efficient four-intensity decoy-state BB84 protocol and derive concise security bounds for this protocol with the universally composable finite-key analysis method. Comparing with the efficient three-intensity protocol, we find that our efficient four-intensity protocol can increase the secret key rate by at least $30\%$. Particularly, this increasing rate of secret key rate will be raised as the transmission distance increases. At a large transmission distance, our efficient four-intensity protocol can improve the performance of quantum key distribution profoundly.

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Haodong Jiang, Ming Gao, Bao Yan, Weilong Wang, Zhi Ma. 2016-03-15. Universally-composable finite-key analysis for efficient four-intensity decoy-state quantum key distribution. https://doi.org/10.1140/epjd%2Fe2016-60655-2

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