Institut für Theoretische Physik, TU Berlin, Hardenbergstraße 36, D-10623 Berlin 12, Germany
Atominstitute of the Austrian Universities, Schüttelstraße 115, A-1020 Wien, Austria; email@example.com
Department of Mathematics, University of Zagreb, GF, Kaciceva 26, POB-217, HR-10001 Zagreb, Croatia; firstname.lastname@example.org; http://m3k.grad.hr/pavicic
Abstract. Spin interferometry of the 4th order for independent polarized as well as unpolarized photons arriving simultaneously at a beam splitter and exhibiting spin correlation while leaving it, is formulated and discussed in the quantum approach. Beam splitter is recognized as a source of genuine singlet photon states. Also, typical nonclassical beating between photons taking part in the interference of the 4th order is given a polarization dependent explanation.
PACS numbers: 03.65.Bz, 42.50.Wm
Keywords: two photon interferometry, quantum optics