Abstract

The two-photon wave function that characterizes light in a two-photon entangled state obeys equations similar to the Wolf equations describing the mutual coherence function. A duality between coherence and entanglement has been established, and a van Cittert-Zernike theorem is applicable. Intensity correlation is described by a Siegert-type relation that is devoid of the deleterious background term.

© 2004 Optical Society of America

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