Global digitalization alongside the emergence of artificial intelligence (AI) based applications has led to data becoming a valuable resource. The ever increasing demand for high speed data has already imparted a burden on existing communication infrastructures. In order to meet increasing demand and realize the unification of digital, physical, and biological worlds, novel innovative communication technologies must be developed. Terahertz (THz) frequency bands are considered to be the next frontier for the high speed communication owing to the huge spectral bandwidth. However, THz technologies remain at an early stage in their development and significant progress is required to achieve their full potential. This Research Topic will provide an overview of recent progress and developments in the field, alongside potential candidates for improving the performance of THz technologies for use in next generation communication.

In recent decades, the continued development of THz technologies has been limited by the lack of efficient high power sources and detectors. However, recent advances in both the generation and detection of THz waves has accelerated research advances in this area, enabling the testing of active/passive sub-systems, devices, and components. In order to realize the full potential of THz waves and bridge the existing technological gap, the development of highly efficient, low-cost, and integrated platforms which are able to control THz waves is imperative. Additional requirements include devices for beam shaping and control, the development of modulation formats suitable for THz transceivers, as well as efficient power generation.

This Research Topic will highlight recent progress with respect to THz technologies for applications in emerging communication technologies. We encourage the submission of original research works, reviews, and perspective articles from international experts and key researchers in this field. Topics include but are not limited to:

• THz for 6G communication.
• Hybrid electronic-photonic integrated platforms.
• Reconfigurable intelligent metasurfaces for 6G communication.
• Microwave photonics for 5G and beyond 5G communication.
• Electronic systems for 6G communication.
• Modulation formats for high-speed 6G data.
• Testbeds & metrology for THz-enabled 6G communication.

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Frontiers in Photonics

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