Technologies operating in the terahertz (THz) range are essential for advancing high-speed communication, sensing and imaging. Here, the authors demonstrate that a HgTe-based heterostructure with electronic band inversion can efficiently mix and up-convert weak signals into THz frequencies at room temperature, using strong nonlinear effects.
- Tatiana A. Uaman Svetikova
- Igor Ilyakov
- Georgy V. Astakhov
