Angular two-photon interference and angular two-qubit states

Jha, A. K., Leach, J., Jack, B., Franke-Arnold, S., Barnett, S. M., Boyd, R. W. and Padgett, M. J. (2010) Angular two-photon interference and angular two-qubit states. Physical Review Letters, 104(1), Art. 010501. (doi:10.1103/PhysRevLett.104.010501)

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Publisher's URL: http://dx.doi.org/10.1103/PhysRevLett.104.010501

Abstract

Using angular-position–orbital-angular-momentum entangled photons, we study angular two-photon interference in a scheme in which entangled photons are made to pass through apertures in the form of double angular slits, and using this scheme, we demonstrate an entangled two-qubit state that is based on the angular-position correlations of entangled photons. The entanglement of the two-qubit state is quantified in terms of concurrence. These results provide an additional means for preparing entangled quantum states for use in quantum information protocols.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles and Barnett, Professor Stephen and Jack, Mr Barry and Boyd, Professor Robert and Franke-Arnold, Dr Sonja and Leach, Mr Jonathan
Authors: Jha, A. K., Leach, J., Jack, B., Franke-Arnold, S., Barnett, S. M., Boyd, R. W., and Padgett, M. J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN:0031-9007
ISSN (Online):1079-7114
Published Online:05 January 2010

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
474271Full-field quantum imagingMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/G011656/1Physics and Astronomy