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Quantum Key Distribution Based on Quantum Decoherence

Jincheng Zhang

Published Aug 29, 2026• 0 citations
Publisher

Abstract

This paper investigates a novel approach to quantum key distribution (QKD) leveraging the phenomenon of quantum decoherence. Traditional QKD protocols, while theoretically secure, are susceptible to various attacks, often relying on the assumption of perfect quantum state preservation. This research proposes a framework for distributed key generation utilizing the inherent limitations imposed by quantum decoherence. The core concept involves encoding key information within quantum states that are deliberately designed to be vulnerable to decoherence. This vulnerability, rather than being a weakness, is exploited to introduce a level of inherent security, effectively masking the key's true value from an eavesdropper attempting to intercept and measure the quantum states. We explore the mathematical formalization of this process, detailing the generation of entangled states, the measurement protocols, and the key distillation process, all incorporating the effects of decoherence. The proposed system offers a potentially more robust defense against sophisticated attacks by introducing a naturally occurring element of uncertainty. This work provides a foundational understanding of utilizing decoherence as a key component within a QKD architecture. ---

DOI
10.5281/zenodo.22156043

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