Hyperentangled Mixed Phased Dicke States: Optical Design and Detection
Year: 2010
Authors: Chiuri A., Vallone G., Bruno N., Macchiavello C., Bruss D., Mataloni P.
Autors Affiliation: 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.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 105 (25) Pages from: 250501-1 to: 250501-4
More Information: 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.KeyWords: Entanglement; SeparabilityDOI: 10.1103/PhysRevLett.105.250501Citations: 30data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-09-15References taken from IsiWeb of Knowledge: (subscribers only)