Hyperentangled Mixed Phased Dicke States: Optical Design and Detection

Anno: 2010

Autori: Chiuri A., Vallone G., Bruno N., Macchiavello C., Bruss D., Mataloni P.

Affiliazione autori: Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; Ctr Studi & Ric Enrico Fermi, I-00184 Rome, Italy; Museo Stor Fis, I-00184 Rome, Italy; Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy; Dipartimento Fis A Volta, I-27100 Pavia, Italy; Univ Dusseldorf, Inst Theoret Phys 3, D-40225 Dusseldorf, Germany; Ist Nazl Ott Applicata INO CNR, I-50125 Florence, Italy.

Abstract: A recently introduced family of multipartite entangled states, the 4-qubit phased Dicke states, has been created by 2-photon hyperentanglement. Our experimental method allows high state fidelity and generation rate. By introducing quantum noise in the multipartite system in a controlled way, we have tested the robustness of these states. To this purpose the entanglement of the resulting multipartite entangled mixed states has been verified by using a new kind of structural witness.

Giornale/Rivista: PHYSICAL REVIEW LETTERS

Volume: 105 (25)      Da Pagina: 250501-1  A: 250501-4

Maggiori informazioni: This work was supported in part by the EU projects CORNER, by a DFG project, and by Finanziamento Ateneo 2009 of Sapienza Universita di Roma.
Parole chiavi: Entanglement; Separability
DOI: 10.1103/PhysRevLett.105.250501

Citazioni: 30
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18
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