Hammam Qassim

TL;DR: Karimi et al. as mentioned in this paper showed that a plasmonic metasurface comprising an array of nano-antennas can couple spin-to-orbital angular momentum at thickness much smaller than the wavelength of the light with an efficiency of around 3%.

TL;DR: In this paper, a photonic implementation of the quantum walk in the orbital angular momentum space of light is presented, where the whole process develops in a single light beam, with no need of interferometers, and it requires optical resources scaling linearly with the number of steps.

TL;DR: In this paper, the authors implemented state tomography using symmetric informationally complete positive operator-valued measures for both pure and mixed photonic qudit states in Hilbert spaces of orbital angular momentum, including spaces whose dimension is not power of a prime.

TL;DR: In this article, the authors studied the efficiency of the orbital angular momentum (OAM) component of a light beam and showed that even for low values of the OAM, a large amount of light can fall outside the fundamental mode of the optical fiber, and quantified the losses as functions of the waist of the coupling beam of OAM and radial indices.

TL;DR: This work reports the experimental realization of a discrete quantum walk taking place in the orbital angular momentum space of light, both for a single photon and for two simultaneous photons, and introduces a novel versatile photonic platform for quantum simulations.