Photon-transistors (IMAGE) University of Copenhagen Caption Two photons are sent through a nanowire towards an atom, where they collide, such that one photon (red) transfers its information to the other photon. Credit Anders Søndberg Sørensen, associate professor, University of Copenhagen Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.