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Holographic generation of highly twisted electron beams
Vincenzo Grillo, Gian Carlo Gazzadi, Erfan Mafakheri +3
Free electrons can possess an intrinsic orbital angular momentum, similar to those in an electron cloud, upon free-space propagation. The wavefront corresponding to the electron's…
Experimental measurement of the self-healing of the spatially inhomogeneous states of polarization of radially and azimuthally polarized vector Bessel beams
Giovanni Milione, Angela Dudley, Thien An Nguyen +4
We experimentally measured the self-healing of the spatially inhomogeneous states of polarization of radial and azimuthal polarized vector Bessel beams. Radial and azimuthal polari…
4 X 20 Gbit/s mode division multiplexing over free space using vector modes and a q-plate mode (de)multiplexer
Giovanni Milione, Martin P. J. Lavery, Hao Huang +8
Vector modes are spatial modes that have spatially inhomogeneous states of polarization, such as, radial and azimuthal polarization. They can produce smaller spot sizes and stronge…
Optical spin-to-orbital angular momentum conversion in ultra-thin metasurfaces with arbitrary topological charges
Frédéric Bouchard, Israel De Leon, Sebastian A. Schulz +3
Orbital angular momentum associated with the helical phase-front of optical beams provides an unbounded \qo{space} for both classical and quantum communications. Among the differen…
Quantum walks and wavepacket dynamics on a lattice with twisted photons
Filippo Cardano, Francesco Massa, Hammam Qassim +8
The "quantum walk" has emerged recently as a paradigmatic process for the dynamic simulation of complex quantum systems, entanglement production and quantum computation. Hitherto,…
Achromatic orbital angular momentum generator
Frédéric Bouchard, Harjaspreet Mand, Mohammad Mirhosseini +2
We describe a novel approach for generating light beams that carry orbital angular momentum (OAM) by means of total internal reflection in an isotropic medium. A continuous space-v…