Author Affiliations

Julius Beck,^1,† Georgios G. Pyrialakos,^2,3,† Matthias Heinrich,¹ Lukas J. Maczewsky,¹ Mercedeh Khajavikhan,⁴ Nikolaos V. Kantartzis,³ Alexander Szameit,^1,* and Demetrios N. Christodoulides²

¹Institute for physics, University Rostock, Albert-Einstein-Str. 23, 18059 Rostock, Germany.

²College of Optics & Photonics-CREOL, University of Central Florida, Orlando, Florida 32816, USA.

³Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.

⁴Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA, USA.

^†equal contribution

^*Corresponding author: alexander.szameit@uni-rostock.de