A multi-node room-temperature quantum network.

We present the first multi-node room-temperature memory-assisted quantum communication network using polarization qubits. Our quantum network combines several independent quantum nodes in an elementary configuration: (i) two independent polarization qubit generators working at rubidium transitions, (ii) two ultra-low noise room-temperature quantum memories, and (iii) a Bell-state qubit decoder and reading station. After storage and retrieval in the two table-top quantum memories, we measure a high-visibility Hong-Ou-Mandel interference of $V=46.8%pm3.4%$ between the outputs. We envision this realization to become the backbone of future memory-assisted cryptographic and entanglement distribution networks.