Quditto: Emulating and Orchestrating Distributed QKD Network Deployments

Abstract:Quantum Key Distribution (QKD) offers information-theoretic security by leveraging quantum mechanics, yet the cost and complexity of dedicated hardware and fiber infrastructure have so far limited large-scale deployment and experimentation. In this paper, we introduce Quditto, an automated open-access emulation platform that combines high-fidelity quantum-channel modeling with a standardized key-delivery API, enabling users to interact with the emulated network exactly as they would with real QKD hardware. Quditto modular design supports pluggable protocol implementations, complex key management schemes and detailed channel models, including variable attenuation and decoherence. We validate Quditto by deploying networks of various sizes and demonstrate its flexibility through two proof-of-concept scenarios featuring eavesdropper attacks and heterogeneous channel conditions.

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arXiv:2512.15408 [quant-ph]

(or arXiv:2512.15408v2 [quant-ph] for this version)

B. Lopez, A. Diaz-Bricio, J. Perez, I. Vidal and F. Valera, "Quditto: Emulating and Orchestrating Distributed QKD Network Deployments," in IEEE Network 2026

https://doi.org/10.1109/MNET.2026.3736912 DOI(s) linking to related resources