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Abstract: We present an experimental method to produce 4-qubit phased Dicke states,based on a source of 2-photon hyperentangled states. By introducing quantumnoise in the multipartite system in a controlled way, we have tested therobustness of these states. To this purpose the entanglement of the resultingmultipartite entangled mixed states has been verified by using a new kind ofstructural witness.



Autor: A. Chiuri, G. Vallone, N. Bruno, C. Macchiavello, D. Bruß, P. Mataloni

Fuente: https://arxiv.org/







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