Jack, B. and Leach, J. and Romero, J. and Franke-Arnold, S. and Ritsch-Marte, M. and Barnett, S.M. and Padgett, M.J. (2009) Holographic ghost imaging and the violation of a bell inequality. Physical Review Letters, 103 (8). 083602-1-083602-4. ISSN 0031-9007Full text not available in this repository. (Request a copy from the Strathclyde author)
We demonstrate the contrast enhancement of images within a ghost-imaging system by use of nonlocal phase filters. We use parametric down-conversion as the two-photon light source and two separated phase modulators, in the signal and idler arms which represent different phase filters and objects, respectively. 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 a Bell-type inequality for an OAM subspace, thereby unambiguously revealing the quantum nature of our ghost-imaging arrangement.
|Keywords:||holographic ghost imaging, bell inequality, phase filters, Optics. Light, Physics and Astronomy(all)|
|Subjects:||Science > Physics > Optics. Light|
|Department:||Faculty of Science > Physics|
|Depositing user:||Strathprints Administrator|
|Date Deposited:||22 Jun 2010 13:12|
|Last modified:||06 Jan 2017 07:56|