Hybrid Purification Scheduling Strategy for Quantum Networks with Heterogeneous Noisy Channels

• David Tavares UFPA
• Diego Abreu UFPA https://orcid.org/0000-0001-9221-7853
• Polyana Moraes UFPA
• Arthur Pimentel UFPA https://orcid.org/0009-0002-0124-2645
• Antônio Abelém UFPA https://orcid.org/0000-0003-4085-6674

DOI: https://doi.org/10.5753/sbrc.2025.5904

Abstract

The evolution of Quantum Internet relies on the efficient generation and purification of entangled pairs (EPR) across noisy and heterogeneous quantum channels. However, several challenges arise in this context, such as (1) estimating the optimal number of purification rounds without prior knowledge of the channel error type, (2) low aggregated success probability in purification processes, and (3) resource wastage caused by unused EPR pairs. In this work, we propose a hybrid scheduling strategy for purification in quantum networks to address these issues. Our approach dynamically adjusts the number of purification rounds, compensates for low success probabilities through additional operations, and mitigates resource inefficiencies by reusing idle EPR pairs. We evaluate the solution through case studies under various noise scenarios, including bit-flip, Werner, and mixed noise models. The results demonstrate significant improvements in throughput compared to current approaches, highlighting the effectiveness of the scheduling strategy in quantum networks.

Keywords: Quantum Purification, Quantum Link Layer, Quantum Internet

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