Quantum Imaging and Orbital Angular Momentum

Leach, J., Jack, B., Romero, J., Ireland, D. , Franke-Arnold, S. , Barnett, S. and Padgett, M. (2010) Quantum Imaging and Orbital Angular Momentum. In: SPIE OPTO 2010: Complex Light and Optical Forces IV, San Francisco, CA, USA, 27-28 Jan 2010, 76130L. ISBN 9780819480095 (doi:10.1117/12.845250)

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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.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles and Ireland, Professor David and Barnett, Professor Stephen and Franke-Arnold, Professor Sonja and Leach, Mr Jonathan
Authors: Leach, J., Jack, B., Romero, J., Ireland, D., Franke-Arnold, S., Barnett, S., and Padgett, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Published Online:08 February 2010

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
161230High Dimensional Entangled SystemsMiles PadgettEuropean Commission (EC)221906P&S - Physics & Astronomy