These electronic circuits were used by John Clarke, Michel Devoret and John Martinis in their experiments on quantum phenomena in the 1980s. Most of the lab equipment they used has been lost, but John Clarke salvaged these parts, which were used to amplify electrical signals.
The experiments showed that the effects of quantum mechanics that usually only appear on a microscopic scale of atoms and particles can be observed on a macroscopic scale in electrical circuits.
John Clarke donated the electronic circuits to the Nobel Prize Museum in 2025.
