Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

IEEE/LEOS Summer Topical Meetings

Full-field quantum measurements and holographic ghost imaging

Jonathan Leach, Barry Jack, Jacquiline Romero, Sonja Franke‐Arnold, Monika Ritsch‐Marte, Stephen Mark Barnett, Frauke Izdebski, R. J. Warburton, Gerald S. Buller, Robert W. Boyd, Miles J. Padgett

Published Jul 1, 2011• 0 citations
Publisher

Abstract

Using fiber arrays we measure the strength of position and momentum correlations, enabling a full-field demonstration of EPR. We also demonstrate contrast enhancement of images within a ghost-imaging system by use of non-local phase filters.
DOI
10.1109/phosst.2011.6000034

Related papers

Heralded single-photon ghost imaging utilizing EPR correlations

Reuben S. Aspden, D. S. Tasca, Robert W. Boyd +1 more

We have developed a quantum ghost imaging system which utilizes a camera to capture spatial distributions across the full field of view. This approach enables the capture of high contrast images with a high detection efficiency.

Frontiers in Optics•Jan 1, 2013•0 citations

Holographic Ghost Imaging

Miles J. Padgett, Barry Jack, Jonathan Leach +4 more

We demonstrate a new form of ghost-imaging, where holograms placed non-locally with respect to the object can enhance the contrast of the coincident image. In this configuration the system unambiguously exhibits its Quantum properties.

Frontiers in Optics•Jan 1, 2009•0 citations

Quantum Ghost Image Discrimination with a Single Photon Pair

Mehul Malik, Heedeuk Shin, Petros Zerom +1 more

A quantum ghost imaging scheme is modified to discriminate between two spatially non-overlapping objects using a single pair of entangled photons. The “ghost” image information is extracted by means of holographic filtering and coincidence detection.

Conference on Lasers and Electro-Optics•Jan 1, 2009•1 citation

Unveiling the Embedded Phase in Quantum Ghost Imaging

Chané Moodley, Bereneice Sephton, Isaac M. Nape +2 more

We show that the necessary interference for phase retrieval in quantum ghost imaging is naturally embedded in the correlation measurements formed from traditional projective masks.

•Jan 1, 2024•0 citations

Heralded phase-contrast imaging using an orbital angular momentum phase-filter

Reuben S. Aspden, Peter A Morris, Ruiqing He +2 more

We utilise the position and orbital angular momentum (OAM) correlations between the signal and idler photons generated in the down-conversion process to obtain ghost images of a phase object. By using an OAM phase filter, which is non-local with respect to the object, the images exhibit isotropic edge-enhancement. This imaging technique is the first demonstration of a full-field, phase-contrast imaging system with non-local edge enhancement, and enables imaging of phase objects using significantly fewer photons than standard phase-contrast imaging techniques.

Journal of Optics•Mar 21, 2016•32 citations

Holographic Ghost Imaging and the Violation of a Bell Inequality

Barry Jack, Jonathan Leach, Jacquiline Romero +4 more

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.

Physical Review Letters•Aug 20, 2009•226 citations
We utilise the position and orbital angular momentum (OAM) correlations between the signal and idler photons generated in the down-conversion process to obtain ghost images of a phase object. By using an OAM phase filter, which is non-local with respect to the object, the images exhibit isotropic edge-enhancement. This imaging technique is the first demonstration of a full-field, phase-contrast imaging system with non-local edge enhancement, and enables imaging of phase objects using significantly fewer photons than standard phase-contrast imaging techniques.
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.