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arXiv · 2604.13834

Quantum Routing Beyond Pathfinding: Multipartite Entanglement Complementation

Si-Yi Chen·Angela Sara Cacciapuoti·Marcello Caleffi
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Abstract

Conventional quantum routing operates under the entrenched assumption that pathfinding is a prerequisite for routing. This classical-inspired routing model imposes a restricting design option, which prevents scaling the quantumness to the network functioning. In this paper, we proposed a novel entanglement-driven routing framework that exploits multipartite entanglement complementation for enabling simultaneous 1-hop connectivity among all non-adjacent source-destination pairs. This changes the notion of ``remoteness'' in the entanglement graph, activated by entanglement. We extend this framework to inter-domain quantum networks and design a polynomial-time algorithm. Such an algorithm allows to select and parallelize multiple requests, bypassing NP-complete path discovery. Performance analysis shows the proposed routing strategy achieves up to $60\%$ hop reduction, with the algorithm enabling efficient parallelism and strong scalability in inter-domain quantum networks.

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Si-Yi Chen, Angela Sara Cacciapuoti, Marcello Caleffi. 2026-04-15. Quantum Routing Beyond Pathfinding: Multipartite Entanglement Complementation. https://arxiv.org/abs/2604.13834

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