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Entangled mixed-state generation by twin-photon scattering

G. Puentes·D. Voigt·A. Aiello·J. P. Woerdman
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Abstract

We report experimental results on mixed-state generation by multiple scattering of polarization-entangled photon pairs created from parametric down-conversion. By using a large variety of scattering optical systems we have experimentally obtained entangled mixed states that lie upon and below the Werner curve in the linear entropy-tangle plane. We have also introduced a simple phenomenological model built on the analogy between classical polarization optics and quantum maps. Theoretical predictions from such model are in full agreement with our experimental findings.

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G. Puentes, D. Voigt, A. Aiello, J. P. Woerdman. 2006-07-03. Entangled mixed-state generation by twin-photon scattering. https://doi.org/10.1103/physreva.75.032319

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