Interference contrast in multi-source few photon optics

Abstract

Many recent experiments employ several parametric down conversion (PDC) sources to get multiphoton interference. Such interference has applications in quantum information. We study here how effects due to photon statistics, misalignment, and partial distinguishability of the PDC pairs originating from different sources may lower the interference contrast in the multiphoton experiments.

23 pages, 9 figures, journal version

References in corpus (3)

• Multi-photon entanglement and interferometry
• Experimental entanglement of six photons in graph states
• Experimentally friendly geometrical criteria for entanglement

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