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Multi-matrix error estimation and reconciliation for quantum key distribution
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DOI：10.1364/OE.27.014545.png)
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摘要
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Post-processing is a significant step in quantum key distribution (QKD), which is used for correcting the quantum-channel noise errors and distilling identical corrected keys between two distant legitimate parties. Efficient error reconciliation protocol, which can lead to an increase in the secure key generation rate, is one of the main performance indicators of QKD setups. In this paper, we propose a multi-low-density parity-check codes based reconciliation scheme, which can provide remarkable perspectives for highly efficient information reconciliation. By testing our approach through data simulation, we show that the proposed scheme combining multi-syndrome-based error rate estimation allows for a more accurate estimation of the error rate as compared with random sampling and single syndrome estimation techniques before the error correction, as well as a significant increase in the efficiency of the procedure without compromising security and sacrificing reconciliation efficiency. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keyword:
PARITY-CHECK CODES
BELIEF-PROPAGATION
CAPACITY
期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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