Author:Thirlwall, JTDate:Nov 1998The recognition of small features of low contrast in the image recorded by an x-ray image intensifier is usually limited by photon noise. This detail-contrast perceptibility is dependent on the detective quantum efficiency (DQE) and the ...Read more
Author:Ibrahim, AH; Roux, FS; Konrad, TDate:Nov 2014When a pair of photons that are entangled in terms of their transverse modes, such as an orbital angular momentum (OAM) basis, propagates through atmospheric turbulence, the scintillation causes a decay of the entanglement. Here, we use ...Read more
Author:Cummings, FDate:Sep 2009Photovoltaic (PV) is the direct conversion of sunlight into electrical energy through a solar cell. This presentation consists of an introduction to photovoltaics, the South African PV research roadmap, a look at the CSIR PV research and ...Read more
Author:Agnew, M; Leach, J; McLaren, M; Roux, FS; Boyd, RWDate:Dec 2011Systems entangled in high dimensions have recently been proposed as important tools for various quantum information protocols, such as multibit quantum key distribution and loophole-free tests of nonlocality. It is therefore important to have ...Read more