Author Affiliations

Francesco Riboli,^1,2 Niccolò Caselli,^1,3 Silvia Vignolini,^1,4 Francesca Intonti,^1,3 Kevin Vynck,^1,5 Pierre Barthelemy,^1,6 Annamaria Gerardino,⁷ Laurent Balet,⁸ Lianhe H. Li,⁴ Andrea Fiore,⁹ Diederik S. Wiersma,^1,3 and Massimo Gurioli^1,3

¹European Laboratory for Non-linear Spectroscopy, Via N. Carrara 1, 50019 Sesto Fiorentino (FI), Italy

²Department of Physics, University of Trento, via Sommarive 14, 38123 Povo (TN), Italy

³Department of Physics, University of Florence, Via G. Sansone 1, 50019 Sesto Fiorentino (FI), Italy

⁴Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK

⁵IOGS - Université Bordeaux, Institut d’Optique d’Aquitaine, 33400 Talence, France)

⁶Quantum Transport, Kavli Institute of Nanoscience, TU Delft, Lorentzweg 1, 2628 CJ Delft, The Netherlands

⁷Institute of Photonics and Nanotechnology, CNR, Via C. Romano 42, 00156 Roma, Italy

⁸Ecole Polytechnique Fédérale de Lausanne, Institute of Photonics and Quantum Electronics, CH-1015 Lausanne, Switzerland.

⁹COBRA Research Institute, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands

^†Present addresses: