Improved information reconciliation with systematic polar codes for continuous variable quantum key distribution
Quantum key distribution (QKD) enables two authenticated parties to share secret key and can detect any attack that attempts to eavesdrop on the key. Information reconciliation is an important part of QKD. The secret key between two communication parties can be extracted by correcting errors caused...
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Published in | Quantum information processing Vol. 20; no. 10 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
01.10.2021
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Quantum key distribution (QKD) enables two authenticated parties to share secret key and can detect any attack that attempts to eavesdrop on the key. Information reconciliation is an important part of QKD. The secret key between two communication parties can be extracted by correcting errors caused by quantum channel noise. To improve the efficiency of information reconciliation and secret key rate, this paper proposes an improved multidimensional information reconciliation protocol based on systematic polar codes. Moreover, we have demonstrated and analyzed the security of the proposed protocol. Simulation results show that the proposed protocol achieves the reconciliation efficiency of around 97% in a wider range of signal-to-noise ratio range
0
,
0.18
and a quite low frame error rate (
P
e
<
0.001
). As a result, the improved multidimensional information reconciliation protocol based on the systematic polar codes can achieve a longer quantum communication transmission distance. |
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ISSN: | 1570-0755 1573-1332 |
DOI: | 10.1007/s11128-021-03265-z |