Quantum Key Distribution Based on Quantum Depolarization

Jincheng Zhang

Published Sep 1, 2026• 0 citations

Abstract

This paper proposes a novel distributed key distribution (DKD) scheme leveraging the principles of quantum depolarization. The core claim centers on enhancing the security of DKD protocols by exploiting the inherent properties of quantum depolarization processes. The proposed mechanism utilizes the quantum depolarization inherent in existing DKD protocols to effectively eliminate eavesdropping attempts targeting the key. This work focuses on improving the resilience of DKD systems against attacks by introducing a controlled depolarization process, thereby making key interception significantly more difficult. The scheme's effectiveness is demonstrated through a theoretical analysis, outlining the mathematical framework and security considerations. The design incorporates elements of the Bennett-Mayhew protocol, modified to incorporate a controlled depolarization step. We present a mathematical formulation detailing the key generation process and the security proof, highlighting the reduced key error rate under realistic depolarization scenarios. The proposed approach represents a significant advancement in DKD security, offering a robust defense against evolving quantum attacks.

DOI: 10.5281/zenodo.22226882

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