Nobel Prize in Physics awarded to three scientists for macroscopic quantum mechanical tunnelling

Scientists John Clarke, Michel H Devoret and John M Martinis on Tuesday won the 2025 Nobel Prize in Physics for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.

“This year’s Nobel Prize laureates conducted experiments with an electrical circuit in which they demonstrated both quantum mechanical tunnelling and quantised energy levels in a system big enough to be held in the hand,” said the Royal Swedish Academy of Sciences in a press release.

The academy awards the Nobel Prizes in physics and chemistry

The experiments conducted by Clarke, Devoret and Martinis on a “chip revealed quantum physics in action”, the press release said.

With their work, the three physicists have provided opportunities to develop “the next generation o