Nonlinear Terahertz Electroluminescence from Dirac-Landau Polaritons

Author(s): B. Benhamou-Bui, C. Consejo, S. S. Krishtopenko, S. Ruffenach, C. Bray, J. Torres, J. Dzian, F. Le Mardelé, A. Pagot, X. Baudry, S. V. Morozov, N. N. Mikhailov, S. A. Dvoretskii, B. Jouault, P. Ballet, M. Orlita, C. Ciuti, and F. Teppe We report Dirac–Landau polaritons observed by terahertz (THz) magnetoreflectivity spectroscopy, demonstrating strong coupling between cyclotron transitions of two-dimensional Dirac fermions in HgTe quantum wells and optical cavity modes. Under pulsed electrical injection we observe efficient nonline… [Phys. Rev. Lett. 136, 096902] Published Mon Mar 02, 2026