Giant enhancement of third-harmonic generation in graphene–metal heterostructures

Irati Alonso Calafell^*, Lee A. Rozema, David Alcaraz Iranzo, Alessandro Trenti, Philipp K. Jenke, Joel Cox, Avinash Kumar, Hlib Bieliaiev, Sébastien Nanot, Peng Cheng, Dmitri K. Efetov, Jin-Yong Hong, Jing Kong, Dirk R. Englund, F. Javier García de Abajo, Frank H.L. Koppens, Philip Walther