Experimental violation of Bell inequalities for multi-dimensional systems

Hsin Pin Lo, Che Ming Li*, Atsushi Yabushita, Yueh Nan Chen, Chih-Wei Luo, Takayoshi Kobayashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Quantum correlations between spatially separated parts of a d-dimensional bipartite system (d ≥ 2) have no classical analog. Such correlations, also called entanglements, are not only conceptually important, but also have a profound impact on information science. In theory the violation of Bell inequalities based on local realistic theories for d-dimensional systems provides evidence of quantum nonlocality. Experimental verification is required to confirm whether a quantum system of extremely large dimension can possess this feature, however it has never been performed for large dimension. Here, we report that Bell inequalities are experimentally violated for bipartite quantum systems of dimensionality d = 16 with the usual ensembles of polarization-entangled photon pairs. We also estimate that our entanglement source violates Bell inequalities for extremely high dimensionality of d > 4000. The designed scenario offers a possible new method to investigate the entanglement of multipartite systems of large dimensionality and their application in quantum information processing.

Original languageEnglish
Article number22088
Pages (from-to)1-9
Number of pages9
JournalScientific Reports
Volume6
DOIs
StatePublished - 26 Feb 2016

Keywords

  • ORBITAL ANGULAR-MOMENTUM
  • QUANTUM-MECHANICS
  • CURRENT SITUATION
  • ENTANGLEMENT
  • TELEPORTATION
  • PHOTONS
  • QUBITS

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