Interference contrast in multi-source few photon optics
Wieslaw Laskowski, Marcin Wiesniak, Marek Zukowski, Mohamed, Bourennane, Harald Weinfurter
TL;DR
This paper investigates how photon statistics, misalignment, and partial distinguishability affect interference contrast in multi-source few-photon experiments, which are crucial for quantum information applications.
Contribution
It provides a detailed analysis of factors reducing interference contrast in multi-source PDC experiments, highlighting the impact of practical imperfections.
Findings
Photon statistics reduce interference contrast
Misalignment decreases interference visibility
Partial distinguishability lowers interference quality
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.
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