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Witnessing Entanglement with Second-Order Interference and Stokes Parameters

Magdalena Stobińska·Krzysztof Wódkiewicz
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Abstract

We propose to use Stokes parameter as an entanglement witness for correlated EPR mixed states of light. Such states can be generated with a beam splitter acting on two mixed squeezed states of light. Stokes witness operators are closely related to the Hanbury-Brown and Twiss interference and can be used to test entanglement in balanced homodyne experiments involving fluctuations of quantum quadratures of the electric field.

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Magdalena Stobińska, Krzysztof Wódkiewicz. 2006-08-01. Witnessing Entanglement with Second-Order Interference and Stokes Parameters. https://doi.org/10.1556/aph.26.2006.3-4.10

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