Abstract
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. (C) 2009 Optical Society of America
Original language | English |
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Pages (from-to) | 8287-8293 |
Number of pages | 7 |
Journal | Optics Express |
Volume | 17 |
Issue number | 10 |
DOIs | |
Publication status | Published - 11 May 2009 |