Violation of a Bell inequality in two-dimensional orbital angular momentum state-spaces.

نویسندگان

  • J Leach
  • B Jack
  • J Romero
  • M Ritsch-Marte
  • R W Boyd
  • A K Jha
  • S M Barnett
  • S Franke-Arnold
  • M J Padgett
چکیده

We observe entanglement between photons in controlled super-position states of orbital angular momentum (OAM). By drawing a direct analogy between OAM and polarization states of light, we demonstrate the entangled nature of high order OAM states generated by spontaneous downconversion through violation of a suitable Clauser Horne Shimony Holt (CHSH)-Bell inequality. We demonstrate this violation in a number of two-dimensional subspaces of the higher dimensional OAM Hilbert space.

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عنوان ژورنال:
  • Optics express

دوره 17 10  شماره 

صفحات  -

تاریخ انتشار 2009