Lal, NijilNijilLalShajilal, BiveenBiveenShajilalAnwar, AliAliAnwarPerumangatt, ChithrabhanuChithrabhanuPerumangattSingh, R. P.R. P.Singh2025-08-312025-08-312019-11-0110.1063/1.51095442-s2.0-85075592430https://d8.irins.org/handle/IITG2025/2315631779388Heralded single photon sources (HSPSs) from spontaneous parametric down-conversion are widely used as single photon sources. We study the photon number statistics of an HSPS carrying orbital angular momentum in our laboratory and observe the sub-Poissonian statistics using only photodetectors and an oscilloscope.falseArticlehttps://aip.scitation.org/doi/pdf/10.1063/1.5109544108976231 November 20191113104arJournal1