Lal, NijilNijilLalMishra, SarikaSarikaMishraRani, AnjuAnjuRaniBanerji, AnindyaAnindyaBanerjiPerumangatt, ChithrabhanuChithrabhanuPerumangattSingh, R. P.R. P.Singh2025-08-312025-08-312023-01-0110.1007/s11128-022-03815-z2-s2.0-85146807228http://repository.iitgn.ac.in/handle/IITG2025/27054Duality in the entanglement of identical particles manifests that entanglement in only one variable can be revealed at a time. We demonstrate this using polarization and orbital angular momentum (OAM) variables of indistinguishable photons generated from parametric down-conversion. We show polarization entanglement by sorting photons in even and odd OAM basis, while sorting them in two orthogonal polarization modes reveals the OAM entanglement. Indistinguishable photons entangled in two variables could find applications in robust quantum communication, remote entanglement generation and distributed quantum sensing.falseEntanglement | Identical particles | Photon indistinguishability | Quantum cryptographyArticlehttps://arxiv.org/pdf/2104.1178415731332January 2023190arJournal1