@article{202002.0343, doi = {10.20944/preprints202002.0343.v1}, url = {https://doi.org/10.20944/preprints202002.0343.v1}, year = 2020, month = {February}, publisher = {Preprints}, author = {Andreas Jechow}, title = {Towards Heralded Two-Photon Absorption and Two-Photon Excited Fluorescence for Quantum Microscopy and Spectroscopy}, journal = {Preprints} }