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Introducing multi-path methods in the entanglement distribution routing process can reduce the storage capacity requirements for individual quantum repeater nodes. Also, it allows for a more efficient utilization of resources from different nodes to handle probabilistic failures that may occur on some certain paths, improving the overall robustness. We adopt a link-disjoint multi-path algorithm Q-PSBA(Path Selection Based on Availability), to avoid resource contention on a single link caused by different paths of the same request. It is achieved by an extended multi-round Dijkstra algorithm with our composite metric K, where the edges associated with the optimal path are deleted between rounds.
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IEEE/ICACT20240378 Slide.13
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