Tomographic characterisation of correlations in a photonic tripartite state

A. Chiuri*, L. Mazzola, M. Paternostro, P. Mataloni

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Starting from a four-partite photonic hyper-entangled Dicke resource, we report the full tomographic characterization of three-, two-, and one-qubit states obtained by projecting out part of the computational register. The reduced states thus obtained correspond to fidelities with the expected states larger than 87%, therefore certifying the faithfulness of the entanglement-sharing structure within the original four-qubit resource. The high quality of the reduced three-qubit state allows for the experimental verification of the Koashi-Winter relation for the monogamy of correlations within a tripartite state. We show that, by exploiting the symmetries of the three-qubit state obtained upon projection over the four-qubit Dicke resource, such relation can be experimentally fully characterized using only 5 measurement settings. We highlight the limitations of such approach and sketch an experimentally-oriented way to overcome them.
Original languageEnglish
Article number085006
Number of pages13
JournalNew Journal of Physics
Volume14
DOIs
Publication statusPublished - 01 Aug 2012

Bibliographical note

13 pages, 5 figures

Keywords

  • EXPERIMENTAL REALIZATION
  • QUANTUM TELEPORTATION
  • ENTANGLEMENT
  • QUBITS
  • GAME

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