The quantum optical description of three experiments involving non-linear optics using a graphical method

Abstract

In this paper we describe and thoroughly discuss three reported experiments in quantum optics (QO) involving interferometers and non-linear crystals. We show that by using a graphical method and an over-simplified model of the parametric down-conversion process, we arrive to explain all the important results reported in the respective papers. Indistinguishability is discussed in the case of separable/non-separable (i.e. entangled) quantum systems and our interpretation is sometimes at variance with the one given by the authors reporting the experiments.

6 pages, 6 figures

References in corpus (2)

• Field operator transformations in Quantum Optics using a novel graphical method with applications to beam splitters and interferometers
• Complementarity, quantum erasure and delayed choice with modified Mach-Zehnder interferometers