For Werner-state links in a quantum data center, recovering elementary-link entanglement quality over ℓ hops is feasible only when w0^ℓ > 1/3, and r-to-1 bilocal-Clifford purification cuts required raw copies by roughly an order of magnitude versus BBPSSW.
Distribution of entanglement in large-scale quantum networks
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Toward Hop-Independent Fidelity in Quantum Data Centers: Resource Requirements for Entanglement Purification
For Werner-state links in a quantum data center, recovering elementary-link entanglement quality over ℓ hops is feasible only when w0^ℓ > 1/3, and r-to-1 bilocal-Clifford purification cuts required raw copies by roughly an order of magnitude versus BBPSSW.