Data from all figures from the article: C. Fournier, S. Roux, K. Watanabe, T. Taniguchi, S. Buil, J. Barjon, J.-P. Hermier, A. Delteil, "Two-photon interference from a quantum emitter in hexagonal boron nitride", Phys. Rev. Applied 19, L041003 (2023). Fig.1: spectroscopy of the quantum emitter studied in the publication. Fig. 2: time-resolved photon counting data. (b) Fluorescence decay. (c) Hanbury Brown and Twiss correlations. (d) Hong-Ou-Mandel correlations in parallel and orthogonal configurations. Fig. 3a: HOM visibility as a function of the time filter width. Fig. 3b: simulation of the visibility decay as a function of the emitter dephasing time.