Simple, pulsed, polarization entangled photon pair source

N. Bruno, E. Zambrini Cruzeiro, A. Martin, R.T. Thew

Abstract

We report the realization of a fibred polarization entangled photon-pair source at 1560 nm based on a type-II nonlinear interaction and working in the picosecond regime. By taking advantage of a set of fibre filters, we deterministically separate the photons and project them into wavelength separable states. A standard entanglement measurement with a net interference visibility close to 1 proves the relevance of our approach as an enabling technology for entanglement-based quantum communication.