8 February 2010 Quantum imaging and orbital angular momentum
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Proceedings Volume 7613, Complex Light and Optical Forces IV; 76130L (2010) https://doi.org/10.1117/12.845250
Event: SPIE OPTO, 2010, San Francisco, California, United States
Abstract
We report a violation of the CHSH inequality for ghost-images. This is achieved by using two spatially separated phase modulators within the context of a two-photon parametric down-conversion experiment. We obtain edge enhanced images as a direct consequence of the quantum correlations in the orbital angular momentum (OAM) of the down-converted photon pairs. For phase objects, with differently orientated edges, we show a violation of the CHSH Bell-type inequality for an OAM subspace, thereby unambiguously revealing the quantum nature of our ghost-imaging arrangement.
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Jonathan Leach, Barry Jack, Jacqui Romero, Dave Ireland, Sonja Franke-Arnold, Steve Barnett, Miles Padgett, "Quantum imaging and orbital angular momentum", Proc. SPIE 7613, Complex Light and Optical Forces IV, 76130L (8 February 2010); doi: 10.1117/12.845250; https://doi.org/10.1117/12.845250
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