Weissflog, M.A.M.A.WeissflogSaravi, S.S.SaraviGigli, C.C.GigliMarino, G.G.MarinoBorne, A.A.BorneLeo, G.G.LeoPertsch, T.T.PertschSetzpfandt, F.F.Setzpfandt2022-05-062022-05-062021https://publica.fraunhofer.de/handle/publica/41692910.1109/CLEO/Europe-EQEC52157.2021.9542093Photon-pair sources based on spontaneous parametric down-conversion (SPDC) are the backbone of a vast number of experimental implementations in quantum optics. Sub-wavelength-sized dielectric nanoresonators have recently emerged as a new platform for the implementation of SPDC sources [1], that promise much potential in generating photons with engineered properties, as these nanoresonators offer a strong control over many parameters of the scattered light (directionality, polarization, ...) However, the many degrees of freedom in these highly multi-modal and non-Hermitian systems makes design and formal description of pair-generation challenging.en620conference paper