353 citations · 860 across the 11 of their papers we have counts for
11 papers
Process tomography of quantum channels using classical light
Bienvenu Ndagano, Benjamin Perez-Garcia, Filippus S. Roux +7
High-dimensional entanglement with spatial modes of light promises increased security and information capacity over quantum channels. Unfortunately, entanglement decays due to pert…
Quantum computation with classical light: implementation of the Deutsch-Jozsa Algorithm
Benjamin Perez-Garcia, Melanie McLaren, Sandeep K. Goyal +3
We propose an optical implementation of the Deutsch-Jozsa Algorithm using classical light in a binary decision-tree scheme. Our approach uses a ring cavity and linear optical devic…
Fiber propagation of vector modes
Bienvenu Ndagano, Robert Bruning, Melanie McLaren +2
Here we employ both dynamic and geometric phase control of light to produce radially modulated vector-vortex modes, the natural modes of optical fibers. We then measure these modes…
Measuring the non-separability of classically entangled vector vortex beams
Melanie McLaren, Thomas Konrad, Andrew Forbes
Given the multitude of applications of vector vortex beams there is a need for robust tools to measure them. Here we exploit the non-separability of such beams, akin to entanglemen…
Detection of Bessel beams with digital axicons
Abderrahmen Trichili, Thandeka Mhlanga, Yaseera Ismail +4
We propose a simple method for the detection of Bessel beams with arbitrary radial and azimuthal indices, and then demonstrate it in an all-digital setup with a spatial light modul…
Higher-dimensional orbital angular momentum based quantum key distribution with mutually unbiased bases
Mhlambululi Mafu, Angela Dudley, Sandeep Goyal +7
We present an experimental study of higher-dimensional quantum key distribution protocols based on mutually unbiased bases, implemented by means of photons carrying orbital angular…
Orbital angular momentum entanglement in turbulence
Alpha Hamadou Ibrahim, Filippus S. Roux, Melanie McLaren +2
The turbulence induced decay of orbital angular momentum (OAM) entanglement between two photons is investigated numerically and experimentally. To compare our results with previous…
Two-photon optics of Bessel-Gaussian modes
Melanie McLaren, Jacquiline Romero, Miles J. Padgett +2
In this paper we consider geometrical two-photon optics of Bessel-Gaussian modes generated in spontaneous parametric down-conversion of a Gaussian pump beam. We provide a general t…
Realising high-dimensional quantum entanglement with orbital angular momentum
Melanie McLaren, Filippus S. Roux, Andrew Forbes
We report the first quantum entanglement experiment in South Africa. The spatial modes of the entangled photon pair are investigated with their potential for high-dimensional entan…
Observing the decay of orbital angular momentum entanglement, through experimentally simulated turbulence
Alpha Hamadou Ibrahim, Filippus S. Roux, Sandeep Goyal +3
We study the evolution of an orbital angular momentum (OAM) entangled bipartite photonic state for the case where one of the photons propagates through Kolmogorov turbulence, using…
Entangled Bessel beams
Melanie McLaren, Megan Agnew, Jonathan Leach +3
Orbital angular momentum (OAM) entanglement is investigated in the Bessel-Gauss (BG) basis. Having a readily adjustable radial scale, BG modes provide a more favourable basis for O…