Detection of entanglement with polarized photons: experimental realization of an entanglement witness

We report on the first experimental realization of an entanglement witness, a method to detect entanglement with few local measurements. The present demonstration has been performed with polarized photons in Werner states, a well-known family of mixed states that can be either separable or nonsepara...

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Veröffentlicht in:	Physical review letters 2003-11, Vol.91 (22), p.227901-227901, Article 227901
Hauptverfasser:	Barbieri, M, De Martini, F, Di Nepi, G, Mataloni, P, D'Ariano, G M, Macchiavello, C
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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