1. Optoelectronics Group Istituto Italiano di Tecnologia via Morego 30 Genova I‐16163 Italy
2. Dipartimento di Fisica Univesità di Genova Via Dodecaneso 33 Genova 16146 Italy
3. Department of Physics Universität Konstanz Universitätsstraße 10 78464 Konstanz Germany
4. Dipartimento di Chimica Univesità di Genova Via Dodecaneso 31 Genova 16146 Italy
5. CIC biomaGUNE Basque Research and Technology Alliance (BRTA) Donostia‐San Sebastián 20014 Spain
6. Biomedical Research Networking Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER‐BBN) Donostia‐San Sebastián 20014 Spain
7. Department of Physics and Materials Science University of Luxembourg 106A Avenue de la Faïencerie Luxembourg L‐1511 Luxembourg
8. Department of Physics Umeå University Linnaeus väg 24 Umeå 901 87 Sweden
9. Umeå Centre for Microbial Research Umeå University Umeå SE‐90187 Sweden