Optimal integration of delay lines or quantum memories

Determine how to optimally incorporate delay lines or quantum memories into repeater graph state architectures to enhance the efficiency of entanglement extraction.

Background

The paper primarily considers memory-less repeater graph state architectures and focuses on Bell-pair extraction under specified measurement bases. It speculates that adding delay lines or quantum memories could improve extraction efficiency, but does not establish how these resources should be integrated.

The unresolved issue concerns the optimal architectural and operational incorporation of delay lines or quantum memories into repeater graph states.

References

Furthermore, we speculate that delay lines or quantum memories should enhance the efficiency of entanglement extraction, but how to optimally incorporate them with RGS remains open.

— Topology-Dependent Enhancement of Entanglement Extraction in Repeater Graph States  (2609.03496 - Chianvichai et al., 3 Sep 2026) in Future Outlook, Discussion and Conclusion