Entangled photons can be used to improve imaging and measurement techniques. A team of researchers from the Fraunhofer Institute for Applied Optics and Precision Engineering IOF in Jena has developed a quantum imaging solution that can facilitate highly detailed insights into tissue samples using extreme spectral ranges and less light.
Source:
https://phys.org/news/2020-04-invisible-visible-entangled-photons-imaging.html