Good question. It would be application specific. I think evanescencnt wave coupling in EM radiation is considered " very classical" (whatever that actually means). But utilizing wave particle duality for tunneling devices is past quantum 1.0 (1.5 maybe?). However, superconductivity tunneling in Josephson junctions in a SQUID is closer to quantum 1.0, but 2.0 if used to generate entangled states for superconducting qbits for quantum computing.

Clear as mud right?

[–] [email protected] 2 points 1 month ago* (last edited 1 month ago)

It is now that I’ve looked up the different types of tunneling you mentioned. I didn’t know there were multiple types of tunneling before now.

Thanks for the informative reply and prompting me to do some reading!