Media type: E-Article Title: Strong coupling between photons of two light fields mediated by one atom Contributor: Hamsen, Christoph; Tolazzi, Karl Nicolas; Wilk, Tatjana; Rempe, Gerhard Published: Springer Science and Business Media LLC, 2018 Published in: Nature Physics, 14 (2018) 9, Seite 885-889 Language: English DOI: 10.1038/s41567-018-0181-1 ISSN: 1745-2473; 1745-2481 Origination: Footnote: