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2025 Nobel Prize in physics awarded to 3 US-based scientists for quantum breakthrough

The UK-US-French trio of John Clarke, Michel Devoret and John Martinis were honoured for their discoveries in quantum mechanics

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A Nobel medal is seen at the Swedish ambassador’s residence in London in 2020. Photo: AP
Agence France-Presse

Briton John Clarke, Frenchman Michel Devoret and American John Martinis won the Nobel Prize in Physics on Tuesday for work on quantum physics in action, the Nobel jury said.

The trio was honoured “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit”, the jury said.

Quantum mechanics describes how differently things work on incredibly small scales.

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For example, when a normal ball hits a wall, it bounces back. But on the quantum scale, a particle will actually pass straight through a comparable wall – a phenomenon called “tunnelling”.

John Martinis stands in his living room after winning the Nobel Prize in Physics for his work on quantum tunnelling on Tuesday. Photo: AP
John Martinis stands in his living room after winning the Nobel Prize in Physics for his work on quantum tunnelling on Tuesday. Photo: AP

Tuesday’s prize was awarded for experiments in the 1980s which showed that quantum tunnelling can also be observed on a macroscopic scale involving multiple particles by using superconductors.

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