Author Affiliations

Martin P. J. Lavery,^(1),* Bettina Heim,⁽²⁾ Christian Peuntinger,⁽²⁾ Omar S. Magaña-Loaiza,⁽³⁾ Ebrahim Karimi,⁽⁴⁾ Thomas Bauer,⁽²⁾ Peter Banzer,^(2),(4) Christoph Marquardt,⁽²⁾ Alan E. Willner,⁽⁵⁾ Robert W. Boyd,^(3),(4) Miles J. Padgett,⁽¹⁾ and Gerd Leuchs^(2),(4)

⁽¹⁾College of Science and Engineering, University of Glasgow, Glasgow, UK

⁽²⁾Max Planck Institute for the Science of Light and Institute of Optics, Information and Photonics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany

⁽³⁾The Institute of Optics, University of Rochester, Rochester, USA

⁽⁴⁾Dept. of Physics, University of Ottawa, Ottawa, Canada

⁽⁵⁾Dept. of Electrical Engineering, University of Southern California, LA, USA

^*Corresponding author: martin.lavery@glasgow.ac.uk