1. Institute of Applied Physics Abbe Center of Photonics Friedrich Schiller University Albert‐Einstein‐Str. 15 Jena 07745 Germany
2. Institute of Physical Chemistry Abbe Center of Photonics Friedrich Schiller University Lessingstr. 10 Jena 07743 Germany
3. University of Sydney Nano Institute (Sydney Nano) School of Physics Physics Road Camperdown NSW 2006 Australia
4. Fraunhofer‐Institute for Applied Optics and Precision Engineering IOF Albert‐Einstein‐Str. 7 Jena 07745 Germany
5. Max Planck School of Photonics Jena 07745 Germany
6. Leibniz Institute of Photonic Technology (IPHT) Albert‐Einstein‐Str. 9 Jena 07745 Germany
7. ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) Institute for Photonics and Advanced Sensing School of Physical Sciences University of Adelaide Adelaide SA 5005 Australia