Polarization-correlated photon pairs from a single ion

Abstract

In the fluorescence light of a single atom, the probability for emission of a photon with certain polarization depends on the polarization of the photon emitted immediately before. Here correlations of such kind are investigated with a single trapped calcium ion by means of second-order correlation functions. A theoretical model is developed and fitted to the experimental data, which show 91% probability for the emission of polarization-correlated photon pairs within $24\mathrm{ns}$.

© 2010 Optical Society of America

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