Presenter: Prof. Josep Miquel Jornet
DEIB - Alpha Room (Bld. 24)
March 28th, 2025 | 10.00 am - 12.30 pm
Contact: Prof. Marco Mezzavilla
Abstract
On March 28th, 2025 starting at 10.00 am the seminar titled "Terahertz Communications: From the Near Field to Space Networks" will take place at DEIB Alpha Room (Building 24).The need for ever-increasing bandwidth is driving the research community to explore new spectrum frontiers. The sub-terahertz and terahertz bands (0.1–10 THz) offer a vast swath of untapped spectrum that could be used for many innovative communication and sensing applications. Over the last decade, remarkable progress in electronic, photonic, and plasmonic technologies has narrowed the terahertz technology gap. Moreover, in-depth studies on terahertz signal propagation, combining physics-based and data-driven approaches, have dispelled misconceptions surrounding the terahertz channel. However, several communication roadblocks must be overcome to unleash the spectrum above 100 GHz. In this talk, we will follow a bottom-up approach to highlight innovative solutions and open challenges for terahertz communications and sensing systems on the ground, in the air, and in space. First, we delve into wavefront engineering for near-field THz links, showcasing novel beam types, including self-healing Bessel and curving Airy beams and discuss the unique opportunities these beams offer for short-range, high-capacity networks. Second, we demonstrate the advantageous role of THz frequencies in satellite communication networks, highlighting their potential for high-speed access links, and our upcoming TeraLink experimental mission.