2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/228367We present a novel optical device based on an integrated system of micro-lenses and single mode optical fibers. It allows to collect and direct into many modes two photons generated by spontaneous parametric down conversion. By this device multiqubit entangled states and/or multilevel qu-$d$it states of two photons, encoded in the longitudinal momentum degree of freedom, are created. The multi-path photon entanglement realized by this device is expected to find important applications in modern quantum information technology.4 pages, 3 figures, revtex, revised versionQuantum Physicstext