2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/200347We theoretically demonstrate a method for producing the maximally path-entangled state (1/Sqrt[2]) (|N,0> + exp[iN phi] |0,N>) using intensity-symmetric multiport beamsplitters, single photon inputs, and either photon-counting postselection or conditional measurement. The use of postselection enables successful implementation with non-unit efficiency detectors. We also demonstrate how to make the same state more conveniently by replacing one of the single photon inputs by a coherent state.4 pages, 1 figure. REVTeX4. Replaced with published versionQuantum Physicstext