  Terahertz (THz) waves have attracted attention as carrier waves for
next-generation wireless communications (6G). Electronic THz emitters are
widely used in current mobile communications; however, they may face technical
limitations in 6G with upper-frequency limits. We demonstrate wireless
communication in a 560-GHz band by using a photonic THz emitter based on
photomixing of a 560-GHz-spacing soliton microcomb in a uni-travelling carrier
photodiode together with a THz receiver of Schottky barrier diode. The on-off
keying data transfer with 2-Gbit/s achieves a Q-factor of 3.4, thus, satisfying
the limit of forward error correction.
