@AdrienneLaF@TheAtlantic@zeynep For anyone else confused about the end of the quote, in the article it says "the last one is *also* important" not *the most* important.
@nattyover I think this allows for a phase difference in the SC wave function across the barrier. The phase difference allows for interference and other QM stuff and varies with the field etc and affects the transport across the barrier allowing easy detection. CM1 was a while ago tho π