![]() |
![]() |
University of Birmingham > Talks@bham > Physics and Astronomy Colloquia > Generation, Detection and Application of Twisted Waves of Light and Neutrons
Generation, Detection and Application of Twisted Waves of Light and NeutronsAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Yeshpal Singh. It was about 50 years ago today, when “Dislocations in wave trains” [1] came into play. Twenty years on, “Dislocations” became a 90’s hit following the ingenious experiments of Soskin et al. [2], that showed the promise of applications of twisted or structured light with non-vanishing orbital angular momentum about its propagation axis. [3-5] Modern use cases for such modalities include increased communication bandwidth for 6G applications.[6] Quantum particle beams can also be shaped by analogue tools of optics. I shall present recent results for neutrons, made possible by microfabricated synthetic holograms containing millions of forked dislocation gratings of the type envisaged by Soskin, et al. [7] [1] “Dislocations in wave trains,” J. F. Nye and M. V. Berry, received 17 January 1973, published in Proc. Roy. Soc. Lond. A 366 , 165 – 190 (1974) [2] “A tribute to Marat Soskin,” M. V. Berry, et al., J. Opt. 23, 050201 (2021) [3] “Roadmap on structured waves,” K. Bliokh, et al., arXiv:2301.05349 (submitted 13 January 2023) [4] “Roadmap on structured light,” H. Rubinsztein-Dunlop, et al., J. Opt. 19, 013001 (2017) [5] “Optical orbital angular momentum,” S. M. Barnett, M. Babiker and M. J. Padgett, Phil. Trans. Roy. Soc. A 375 , 20150444 (2017) [6] “Utilizing multiplexing of structured THz beams carrying orbital-angular-momentum for high-capacity communications,” H. Zhou, et al., Optics Express 30, 25418 (2022) [7] “Experimental realization of neutron helical waves,” D. Sarenac, M. E. Henderson, H. Ekinci, C. W. Clark, D. G. Cory, L. DeBeer-Schmitt, M. G. Huber, C. Kapahi, D. A. Pushin, Sci. Adv. 8, eadd2002 (18 November 2022) This talk is part of the Physics and Astronomy Colloquia series. This talk is included in these lists:Note that ex-directory lists are not shown. |
Other listsBiosciences seminars Pure Détours Applied Topology ColloquiumOther talksSignatures of structural criticality and universality in the cellular anatomy of the brain Provably Convergent Plug-and-Play Quasi-Newton Methods for Imaging Inverse Problems Statistical Physics Perturbation Theory Applied to the Ising Model on the Square, Cubic and Hypercubic Lattices [Friday seminar]: Irradiated brown dwarfs in the desert The percolating cluster is invisible to image recognition with deep learning |