Bidirectional quantum frequency conversion distributes atom-photon entanglement over 24 km of deployed fiber at 1.7% transfer efficiency with fidelity drop under 1%.
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Metropolitan entanglement distribution between an atom and a near-visible photon
Bidirectional quantum frequency conversion distributes atom-photon entanglement over 24 km of deployed fiber at 1.7% transfer efficiency with fidelity drop under 1%.