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Quantum Information Processing

Erschienen in:

01.04.2024

Improving the performance of practical phase-matching quantum key distribution with advantage distillation

verfasst von: Zhe Wang, Chun-Mei Zhang, Hong-Wei Li

Erschienen in: Quantum Information Processing | Ausgabe 4/2024

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Abstract

Phase-matching quantum key distribution (PM-QKD) is a promising protocol that can surpass the linear key-rate bound. Generally, inserting an advantage distillation (AD) step into PM-QKD can improve the secure key rate and transmission distance significantly in the asymptotic case. Here, we investigate the performance of practical PM-QKD systems with AD in the non-asymptotic case. Simulation results show that AD can dramatically improve the performance of practical PM-QKD systems. Moreover, we propose to estimate the information leakage using three mutually unbiased bases, namely X, Y and Z, to further enhance its performance, which demonstrates that using the error rates in X, Y and Z bases to estimate the information leakage can improve the secure key rate at high channel losses and misalignment errors.

Vorheriger Artikel Bidirectional quantum operation teleportation with two four-qubit cluster states

Nächster Artikel Generation of five-photon hyperentangled cluster state with three-photon GHZ state and Bell state via weak cross-Kerr nonlinearity

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Titel: Improving the performance of practical phase-matching quantum key distribution with advantage distillation
verfasst von: Zhe Wang
Chun-Mei Zhang
Hong-Wei Li
Publikationsdatum: 01.04.2024
Verlag: Springer US
Erschienen in: Quantum Information Processing / Ausgabe 4/2024
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI: https://doi.org/10.1007/s11128-024-04337-6

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