Correlations in photon-numbers and integrated intensitiesin parametric processes involving three optical fields |
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Authors: | J.?Pe?ina,J.?K?epelka,J.?Pe?ina Suffix" >Jr,M.?Bondani,A.?Allevi,A.?Andreoni |
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Affiliation: | J. Peřina, J. Křepelka, J. Peřina Jr, M. Bondani, A. Allevi and A. Andreoni |
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Abstract: | Two strongly-pumped parametric interactions are simultaneously realized in a single nonlinear crystal in order to generate three strongly correlated optical fields. By combining together the outputs of two of the three detectors measuring intensities of the generated fields, we obtain the joint photocount statistics between the single field and the sum of the other two. We apply a microscopic quantum theory developed earlier to determine the joint photon-number distribution and the joint quasi-distributions of integrated intensities and prove nonclassical nature of the three-mode state. Finally, by performing a conditional measurement on the single field, we obtain a state endowed with a sub-Poissonian statistics, as testified by the analysis of the conditional Fano factor. The role of quantum detection efficiencies in this conditional state-preparation method is discussed in detail. |
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Keywords: | KeywordHeading" >PACS 42.50.-p Quantum optics 42.50.Dv Quantum state engineering and measurements 42.50.Ar Photon statistics and coherence theory 03.65.Ud Entanglement and quantum nonlocality |
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