Quantum Key Distribution Protocol Based on Quantum Decoherence

Jincheng Zhang

Published Aug 29, 2026• 0 citations

Abstract

This paper proposes a novel distributed key generation (DKG) protocol leveraging the phenomenon of quantum decoherence. The protocol aims to enhance security by eliminating the reliance on classical information exchange, thereby mitigating the risk of man-in-the-middle attacks prevalent in traditional DKG schemes. The core idea involves utilizing quantum entanglement for initial information exchange, coupled with strategically introduced random decoherence operations. These decoherence operations induce changes in the quantum states, which are then exploited during the key negotiation process. The resulting key is validated through quantum state measurements and statistical analysis. The protocol's security stems from the inherent fragility of quantum states due to decoherence, making it computationally infeasible for an attacker to compromise the key without disrupting the entire system. This work presents a fundamentally new approach to DKG, offering improved security prospects within the constraints of quantum mechanics.

DOI: 10.5281/zenodo.22152297

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