Author:Dudley, Angela L; Nock, M; Konrad, T; Forbes, ADate:Mar 2010Since the pioneering work on the entanglement of the orbital angular momentum (OAM) states of light, much attention has been devoted to the subject, with particular attention into the quantum aspects of information processing using OAM. ...Read more
Author:Dudley, Angela L; Vette, C; Szameit, A; Forbes, ADate:Aug 2015Significant interest has been devoted to tailoring optical fields that transversely accelerate during propagation in the form of Airy, Weber and Mathieu beams. In this work, the authors introduce a new type of optical field that exhibits ...Read more
Author:Dudley, Angela L; Litvin, I; Roux, FS; Forbes, ADate:Feb 2013By using digital holograms, we present a simple technique for performing a complete azimuthal decomposition of an arbitrary laser mode. The match-filter, used to perform the azimuthal decomposition, is bounded by an annular ring, allowing us ...Read more
Author:Dudley, Angela L; Mhlanga, T; Lavery, M; McDonald, Andre M; Roux, FS; Padget, M; Forbes, ADate:Jan 2013We demonstrate the efficient sorter of Bessel beams separating both the azimuthal and radial components. This is based upon the recently reported transformation of angular to transverse momentum states. We separately identify over forty ...Read more
Author:Mhlanga, T; Dudley, Angela L; McDonald, Andre M; Roux, FS; Lavery, M; Padgett, M; Forbes, ADate:Feb 2013A procedure to efficiently sort orbital angular momentum (OAM) states of light, by performing a Cartesian to log-polar coordinate transformation which translates helically phased beams into a transverse phase gradient, currently exists1. We ...Read more
Author:Zhang, YI; Roux, FS; Konrad, T; Agnew, M; Leach, J; Forbes, ADate:Feb 2016Many protocols in quantum science, for example, linear optical quantum computing, require access to large-scale entangled quantum states. Such systems can be realized through many-particle qubits, but this approach often suffers from scalability ...Read more
Author:McLaren, M; Agnew, M; Leach, J; Roux, FS; Padgett, MJ; Boyd, RW; Forbes, ADate:Oct 2012Orbital angular momentum (OAM) entanglement is investigated in the Bessel-Gaussian (BG) basis. Having a readily adjustable radial scale, BG modes provide an alternative basis for OAM entanglement over Laguerre-Gaussian modes. We show that the ...Read more
Author:Roux, FS; Wellens, T; Shatokhin, VDate:Jun 2015Recently, an infinitesimal propagation equation was derived for the evolution of orbital angular momentum entangled photonic quantum states through turbulence. The authors will discuss its derivation and application within both classical and ...Read more
Author:Roux, FS; Wellens, T; Shatokhin, VDate:Aug 2015The evolution of the quantum states of photons propagating through turbulence can be investigated with the infinitesimal propagation equation (IPE). However, when it is expressed directly in terms of an orbital angular momentum (OAM) basis, ...Read more
Author:Roux, FSDate:Jan 2011Stochastic vortex fields are found in laser speckle, in scintillated beams propagating through a turbulent atmosphere, in images of holograms produced by Iterative Fourier Transform methods and in the beams produced by certain diffractive ...Read more
Author:Roux, FSDate:Jan 2011Orbital angular momentum (OAM) entangled bi-photons are a resource for the higher dimensional implementation of quantum cryptography, which allows secure communication over various channels. In the case where free-space is used as communication ...Read more
Author:Dudley, Angela L; Rosales-Guzman, C; Trichilli, A; Forbes, ADate:Jan 2017We implement digital holograms for the creation and detection of the spatial modes of light. We make use of modal decomposition theory to determine the numerous properties of light, from the modal content of laser beams to decoding the ...Read more
Author:Gailele, Lucas M; Dudley, Angela L; Forbes, ADate:Sep 2018Current communication systems make use of polarization and wavelength multiplexing to increase transmission rates. To offer a further improvement, Orbital Angular Momentum (OAM) modes (or Laguerre-Gaussian modes) provide an infinite dimensional ...Read more
Author:Gailele, Lucas M; Dudley, Angela L; Ndagano, B; McLaren M, M; Rosales, C; Forbes, ADate:Jul 2016The orbital angular momentum (OAM) of light has become the focus of intensive research. Traditional optical communication systems optimize multiplexing in the polarization and the wavelength of light to attain an increase in bandwith. However ...Read more
Author:Li, Y; Dudley, Angela L; Mhlanga, T; Escutia, MJ; Forbes, ADate:Aug 2013We experimentally generate non-diffracting vector vortex beams by using a Spatial Light Modulator (SLM) and an azimuthal birefringent plate (q-plate). The SLM generates scalar Bessel beams and the q-plate converts them to vector vortex beams. ...Read more
Author:Dudley, Angela L; Lib, Y; Mhlanga, T; Escuti, M; Forbes, ADate:Mar 2014We demonstrate how to create non-diffracting vector Bessel beams by implementing a spatial light modulator (SLM) to generate scalar Bessel beams which are then converted into vector fields by the use of an azimuthally-varying birefringent ...Read more