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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Angular two-photon interference and angular two-qubit states

Jha, Anand Kumar and Leach, Jonathan and Jack, Barry and Franke-Arnold, Sonja and Barnett, Stephen M. and Boyd, Robert W. and Padgett, Miles J. (2010) Angular two-photon interference and angular two-qubit states. Physical Review Letters, 104 (1). ISSN 0031-9007

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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.