Multi-photon, multi-mode polarization entanglement in parametric down-conversion
arXiv:quant-ph/0306133 · doi:10.1103/PhysRevA.68.053807
Abstract
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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