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<p>Here, we are concerned with quantum key distribution—a way to establish common cryptographic key between several parties. The work proposes a combination between quantum key distribution and systematic polar coding (an error correction algorithm)—quantum key distribution based on systematic polar coding. This approach relies on unification of parameter estimation and error correction by integrating polar coding into the quantum transmission and pre-processing stages of a QKD protocol. This results in obtaining key sizes greater than the original quantum key distribution BB84 when finite-key size regime and single-photon operation are considered.</p>

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Quantum key distribution based on systematic polar coding

  • 期刊论文

  • 发表日期：

    2026年7月3日

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  • Georgi Bebrov

摘要

Here, we are concerned with quantum key distribution—a way to establish common cryptographic key between several parties. The work proposes a combination between quantum key distribution and systematic polar coding (an error correction algorithm)—quantum key distribution based on systematic polar coding. This approach relies on unification of parameter estimation and error correction by integrating polar coding into the quantum transmission and pre-processing stages of a QKD protocol. This results in obtaining key sizes greater than the original quantum key distribution BB84 when finite-key size regime and single-photon operation are considered.