Highly efficient THz four-wave mixing in doped silicon

Nils Dessmann, Nguyen H. Le, Viktoria Eless, Steven Chick, Kamyar Saeedi, Alberto Perez-Delgado, Sergey G. Pavlov, Alexander F. G. van der Meer, Konstantin L. Litvinenko, Ian Galbraith, Nikolay V. Abrosimov, Helge Riemann, Carl R. Pidgeon, Gabriel Aeppli, Britta Redlich, Benedict N. Murdin