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.
Hyperentangled Mixed Phased Dicke States: Optical Design and Detection / Chiuri, Andrea; Vallone, Giuseppe; Bruno, Nicola; C., Macchiavello; D., Bruss; Mataloni, Paolo. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 105:25(2010), pp. 250501-1-250501-4. [10.1103/physrevlett.105.250501]
Hyperentangled Mixed Phased Dicke States: Optical Design and Detection
CHIURI, ANDREA;VALLONE, GIUSEPPE;BRUNO, Nicola;MATALONI, Paolo
2010
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
