Want to read a Comment by the three Nobel Laureates on quantum circuits?
Here it is: ($)
www.nature.com/articles/s41...
Quantum Josephson junction circuits and the dawn of artificial atoms - Nature Physics
In 1985, experiments revealed the quantum behaviour of a macroscopic degree of freedom: the phase difference across a Josephson junction. The authors recount the history of this milestone for the development of superconducting quantum circuits.