q-ROADM Routes Entanglement to Six Users
A metro-fibre q-ROADM dynamically distributes entangled photon pairs to six users and switches among mesh, sliced, and SIAT/flooding modes.
TL;DR — A q-ROADM-enabled metropolitan quantum network dynamically distributes polarisation-entangled photon pairs from a broadband source to six users over deployed campus and metropolitan fibre. The abstract supports programmable full-mesh, partial-mesh, sliced-subnetwork, and multi-protocol operation, including stable six-user full-mesh operation for more than 150 hours. It does not disclose rates, fidelities, loss budgets, bibliographic metadata, or security-proof details.
What the paper claims
The abstract reports a metropolitan-scale quantum communication network for dynamic entanglement distribution. Its core evidence is the statement: "We demonstrate a metropolitan-scale entanglement-based quantum communication network enabled by a quantum reconfigurable optical add-drop multiplexer (q-ROADM)."
The network distributes "polarisation-entangled photon pairs from a broadband source" to "six users over deployed campus and metropolitan fibre." Those phrases support the central claim: this is not only a static point-to-point lab link, but a six-user deployed-fibre demonstration of programmable entanglement allocation.
The abstract frames the broader purpose as service-oriented quantum networking: "flexible allocation of entanglement resources according to link condition and service requirement." That is the strongest architectural claim available from the abstract.
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