Fig. 3: Heralded generation of three-photon GHZ states.
From: A versatile single-photon-based quantum computing platform
Measured expectation values of the stabilizing operators of the heralded three-photon GHZ state \(\left\vert {{{{\rm{GHZ}}}}}_{3}^{+}\right\rangle\) yielding a fidelity of \({F}_{{{{{\rm{GHZ}}}}}_{3}^{+}}=0.82\pm 0.04\). The expectations values are computed from 500 samples. Error bars correspond to ±1 s.d. of the photon counting statistics.
