@article{10902/1806, year = {1997}, month = {5}, url = {http://hdl.handle.net/10902/1806}, abstract = {In the Wigner formalism, after giving a general description of a light beam, the theory of parametric down-conversion is developed to second-order in the coupling constant. We then describe the detection process by calculating the auto-correlation and cross-correlations of the signal and idler beams. Four recent experiments are analyzed in detail: interference on a screen, Franson's experiments [Phys. Rev. Lett. 62, 2205 (1989)], Rarity and Tapster's experiments [Phys. Rev. Lett. 64, 2495 (1990)], and induced coherence without induced emission [X. Y. Zou, L. J. Wang, and L. Mandel, Phys. Rev. Lett. 67, 318 (1991)].}, publisher = {American Physical Society}, publisher = {Physical Review. A, Atomic, molecular, and optical physics, vol. 55, iss. 5, p. 3879–3890, (1997)}, title = {Fourth-order interference in the Wigner representation for parametric down-conversion experiments}, author = {Casado, Alberto and Fernández-Rueda, Agustín and Marshall, Trevor W. and Risco-Delgado, Ramón and Santos Corchero, Emilio}, }