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recently, a joint experimental team led by the purple mountain observatory of the chinese academy of sciences successfully realized kilometer-level terahertz wireless communication transmission of high-definition video signals based on superconducting reception on the qinghai-tibet plateau.this is the first time in the world that high-sensitivity terahertz superconducting receiver technology has been successfully applied to a long-distance wireless communication system.

this experiment was carried out at the submillimeter wave astronomy observation base in the snowy mountain ranch in haixi prefecture, qinghai province, at an altitude of more than 4,000 meters. october to march of the following year is the best time period for terahertz frequency band observations here. in the experiment, the signal intensity of the transmitter was only 10 microwatts, which is equivalent to one millionth of the emission intensity of a mobile phone base station. under such weak signal intensity, the researchers successfully received the distance signal through the terahertz superconducting receiver. hd video signal transmitted over 1.2 kilometers.

li jing, a researcher at the purple mountain observatory of the chinese academy of sciences, said that microwave communication is equivalent to a two-lane road, while terahertz communication has wider and richer spectrum resources, which is equivalent to increasing the lane to six or eight lanes. this is terahertz communication. the significance of superconducting detection technology is that it has high sensitivity, which is equivalent to a car running on a road with wider lanes, with better performance and almost no loss, so it can run farther.