Electromagnetics has long since reached the status of "mature technology" as witnessed by its unique role as a backbone of the "(tele)communication era".

Besides, from a conceptual viewpoint, Electromagnetics stands as the first example  (and milestone) of  gauge field theory, and as the source wherefrom Relativity and Quantum Mechanics originated.
Indeed,  Electromagnetics has still the potential to give new insights and directions in fundamental Physics. 

This Special Session attempts to illustrate this by a few but significant examples.

Experiments aimed at extending the spectral coverage of gravitational wave detectors, or at detecting axion-like particles (credited as possible dark-matter constituents) are under active development.
These experiments are based on graviton-photon coupling (Gertsenshtein effect) or axion-photon coupling (Primakoff effect), and have significant technological overlaps.

Not less intriguing is the study of charge-carriers' dynamics (Cooper pairs) in superconductors exposed to gravitational fields, where violation of the weak equivalence principle has been anticipated.
These studies may be especially relevant  to design laboratory sources of gravitational waves, for which new ideas have been recently proposed.

Last, but not least, the possible identification and observation of electromagnetic-radiation signatures of gravity-induced quantum wavefunction collapse in mesoscopic objects, could be an important evidence to prove/disprove/modify the Djosi-Penrose conjecture.

The Session presentations (all by invited Speakers) discuss/highlight some of the above paradigms, and also review the status and trends of some related key technologies, as e.g., single/few quanta detectors, optical fibers, and superconducting devices.