Achieving 500-GHz communication over 1.2 km using an astronomical telescope with a quantum-limited superconducting receiver

Natl Sci Rev. 2025 Jun 5;12(8):nwaf222. doi: 10.1093/nsr/nwaf222. eCollection 2025 Aug.

¹ Purple Mountain Observatory, Chinese Academy of Sciences, China.
² Microsystem and Terahertz Research Center, China Academy of Engineering Physics, China.
³ Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, China.
⁴ The 54th Research Institute of China Electronics Technology Group Corporation, China.
⁵ Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, China.
⁶ School of Mathematical Sciences, Shanghai Normal University, China.

Abstract

500 GHz video transmission over 1.2 km is achieved using an astronomical telescope equipped with a quantum-limited superconducting SIS receiver.