Nanostructured surfaces for future quantum computer chips

https://techxplore.com/news/2022-06-nanostructured-surfaces-future-quantum-chips.html

"non-reciprocal light propagation combined with frequency conversion of laser light... a few hundred nanometers, to convert infrared into visible light... conversion process takes place in one illumination direction for nanostructured surface, completely suppressed in opposite direction... duality in frequency conversion characteristics code images into transparent surface... images only became visible when we used infrared laser light for the illumination"

Related: US, Japan reaching for a 2-nm chip breakthrough

https://asiatimes.com/2022/08/us-japan-reaching-for-a-2-nm-chip-breakthrough/