Detection of Entanglement with Polarized Photons: Experimental Realization of an Entanglement Witness
- 24 November 2003
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 91 (22) , 227901
- https://doi.org/10.1103/physrevlett.91.227901
Abstract
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 nonseparable. The Werner states are generated by a novel high brilliance source of bipartite entangled states by which the state mixedness can be easily adjusted.Keywords
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