Fig. 2 | Scientific Reports

Fig. 2

From: Integrated high-fidelity preparation and analysis of photonic two-qubit states for quantum network nodes

Fig. 2

Hong–Ou–Mandel (HOM) interference measured at the crossing Mach-Zehnder interferometer (MZI) (containing PCR) using the two photons emitted by the linear spontaneous parametric down-conversion source shown in Fig. 1. Error bars are estimated from Poissonian photon statistics. The temporal shift in arrival time is introduced by changing the path length to the MZI of one of the two photons using the off-chip delay line. We measure a HOM visibility of 99.5(4)%.

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