Design Blueprint: An Entanglement-Swapping Relay for Long-Baseline Clock Distribution

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24138474): Distributing entanglement across a baseline longer than a single low-loss span requires swapping: entanglement created independently on two halves of the route is joined by a Bell measurement at the middle station. Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.