Extended Data Fig. 3: Temporal filtering of photons.
From: Deterministic delivery of remote entanglement on a quantum network

Histograms are shown of the times at which photons are detected at each single-photon detector (blue) during a deterministic entanglement-delivery experiment with bright-state population α = 0.12. The orange histograms show the photons that were detected within the temporal filter window and so were counted as valid entanglement events. The green line shows a Gaussian fit to the pulse with a full-width at half-maximum of 2.26 ns as measured in Extended Data Fig. 8. This is used to estimate the contribution of residual pulse photons within the filter window.