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Multi-photon, multi-mode polarization entanglement in parametric down-conversion

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arxiv quant-ph/0306133 v1 pith:7EEAWM7S submitted 2003-06-19 quant-ph

Multi-photon, multi-mode polarization entanglement in parametric down-conversion

classification quant-ph
keywords polarizationregimedown-conversionentanglementgainmulti-modemulti-photonparametric
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We study the quantum properties of the polarization of the light produced in type II spontaneous parametric down-conversion in the framework of a multi-mode model valid in any gain regime. We show that the the microscopic polarization entanglement of photon pairs survives in the high gain regime (multi-photon regime), in the form of nonclassical correlation of all the Stokes operators describing polarization degrees of freedom.

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