Author Affiliations

M. Celebrano,^1,* L. Ghirardini,¹ X. Wu,^2,3 S. Großmann,² P. Biagioni,¹ G. Pellegrini,¹ M. Baselli,¹ A. Locatelli,⁴ C. De Angelis,⁴ G. Cerullo,^1,5 R. Osellame,⁵ B. Hecht,² L. Duò,¹ F. Ciccacci,¹ and M. Finazzi¹

¹Physics Department, Politecnico Milano, P.zza Leonardo Da Vinci 32, 20133 Milano, Italy.

²Nano-Optics & Biophotonics Group - Department of Physics - Experimental Physics 5, University of Würzburg, Am Hubland, 97074 Würzburg, Germany.

³Present Address: Ultrafast Nanooptics Group – Department of Physics – Experimental Physics III, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany.

⁴Department of Information Engineering, University of Brescia, Via Branze 38, 25123 Brescia, Italy.

⁵IFN-CNR - Physics Department, Politecnico Milano, P.zza Leonardo Da Vinci 32, 20133 Milano, Italy.

^*Corresponding author: michele.celebrano@polimi.it