"Insiders" (ahem why does OP think this is interesting ) chip in on the following and others? They could also be standard, but I an likely much more wrong about how interesting they are?

1) frequency upconverted light with BBO generates photocurrents (But it doesn't seem like the measurement itself is "quantum-enhanced"? As I understand it the process generates entangled photon pairs?)

2)etching gold with very mild chemicals (KI would be a health supplement after your nuclear apocalypse. YBCO in your cup of phosphoric acid doesn't seem so bad either)

3) https://www.colorado.edu/conference/bss/media/4149

Electrons in superconductors form Cooper pairs that are theoretically predicted to break (depair) at a certain current. However it's hard to observe because the other effects break superconductivity before you reach that current. They managed to circumvent this by sending the current in picosecond pulses, which is the novel part, and confirm the prediction. They did it for two types of superconductors with different mechanisms of action: classic low-temperature superconductors and modern high-temperature (YBCO).

Found a much more readable summary for people who aren't already physics grad students, but have some minor knowledge of superconductors.

https://www.cui-advanced.uni-hamburg.de/en/research/wissensc...