Secure Enhancement of Quantum Key Distribution Protocol Based on Entangled States

Jincheng Zhang

Published Aug 31, 2026• 0 citations

Abstract

This paper presents a novel approach to enhancing the security of Quantum Key Distribution (QKD) protocols by leveraging multi-partite entangled states and dynamic entanglement control. Current QKD protocols, while providing theoretical security guarantees, remain vulnerable to sophisticated attacks that exploit imperfections in quantum hardware and potential eavesdropping strategies. Our work addresses this limitation by introducing a framework where multiple entangled states are employed simultaneously, and their entanglement is dynamically adjusted during the key distribution process. This dynamic control mitigates the impact of noise and reduces the effectiveness of various attack vectors, including those targeting Bell inequality violations and time-dependent attacks. We formally analyze the security of this enhanced protocol, demonstrating its resilience against a broader range of attacks. The key contributions lie in the development of a robust protocol architecture and the implementation of a sophisticated control mechanism that maintains entanglement fidelity and security even under adverse conditions. The proposed method significantly improves the practical security of QKD systems, paving the way for more reliable and secure quantum communication networks.

DOI: 10.5281/zenodo.22202908

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