You mentioned "time-domain", and I recalled "time-polarization".
From https://twitter.com/westurner/status/1049860034899927040 :
https://web.archive.org/web/20171003175149/https://www.omnis...
"Mind Control and EM Wave Polarization Transductions" (1999)
> To engineer the mind and its operations directly, one must perform electrodynamic engineering in the time * domain, not in the 3-space EM energy density domain.*
Could be something there.
Topological Axion antiferromagnet
https://phys.org/news/2021-07-layer-hall-effect-2d-topologic... :
> Researchers believe that when it is fully understood, TAI can be used to make semiconductors with potential applications in electronic devices, Ma said. The highly unusual properties of Axions will support a new electromagnetic response called the topological magneto-electric effect, paving the way for realizing ultra-sensitive, ultrafast, and dissipationless sensors, detectors and memory devices.
Optical topological antennas
https://engineering.berkeley.edu/news/2021/02/light-unbound-... :
> The new work, reported in a paper published Feb. 25 in the journal Nature Physics, throws wide open the amount of information that can be multiplexed, or simultaneously transmitted, by a coherent light source. A common example of multiplexing is the transmission of multiple telephone calls over a single wire, but there had been fundamental limits to the number of coherent twisted light waves that could be directly multiplexed.
Rydberg sensor https://phys.org/news/2021-02-quantum-entire-radio-frequency... :
> Army researchers built the quantum sensor, which can sample the radio-frequency spectrum—from zero frequency up to 20 GHz—and detect AM and FM radio, Bluetooth, Wi-Fi and other communication signals.
> The Rydberg sensor uses laser beams to create highly-excited Rydberg atoms directly above a microwave circuit, to boost and hone in on the portion of the spectrum being measured. The Rydberg atoms are sensitive to the circuit's voltage, enabling the device to be used as a sensitive probe for the wide range of signals in the RF spectrum.
> "All previous demonstrations of Rydberg atomic sensors have only been able to sense small and specific regions of the RF spectrum, but our sensor now operates continuously over a wide frequency range for the first time,"