Age-Based Scheduling for a Memory-Constrained Quantum Switch

Stavros Mitrolaris; Subhankar Banerjee; Sennur Ulukus

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arXiv · 2601.11698

Age-Based Scheduling for a Memory-Constrained Quantum Switch

Stavros Mitrolaris·Subhankar Banerjee·Sennur Ulukus

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Abstract

In a time-slotted system, we study the problem of scheduling multipartite entanglement requests in a quantum switch with a finite number of quantum memory registers. Specifically, we consider probabilistic link-level entanglement (LLE) generation for each user, probabilistic entanglement swapping, and one-slot decoherence. To evaluate the performance of the proposed scheduling policies, we introduce a novel age-based metric, coined age of entanglement establishment (AoEE). We consider two families of low-complexity policies for which we obtain closed-form expressions for their corresponding AoEE performance. Optimizing over each family, we obtain two policies. Further, we propose one more low-complexity policy and provide its performance guarantee. Finally, we numerically compare the performance of the proposed policies.

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Stavros Mitrolaris, Subhankar Banerjee, Sennur Ulukus. 2026-01-16. Age-Based Scheduling for a Memory-Constrained Quantum Switch. https://arxiv.org/abs/2601.11698

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