Quantum, Quantum Computing, Superconductivity, Cooper, Qubit.
In this article I will pose the basis to understand how superconductivity can be used to built quantum bits. To do so, I will present the Bardeen-Cooper-Schriffer (B.C.S.) microscopic theory, developed in 1957 [1], that earned the authors a Nobel Prize in 1972. This theory explains the microscopic