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

Alessandra Gatti·Roberta Zambrini·Maxi San Miguel·Luigi A. Lugiato
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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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Alessandra Gatti, Roberta Zambrini, Maxi San Miguel, Luigi A. Lugiato. 2003-06-19. Multi-photon, multi-mode polarization entanglement in parametric down-conversion. https://doi.org/10.1103/physreva.68.053807

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