Quantum Leap: Nobel Prize in Physics Honors Breakthroughs in Superconducting Circuits

From left to right, pictures of 2025 Nobel winners John Clarke, Michel H. Devoret and John M. Martinis are projected on a screen at a news conference in Stockholm on Tuesday, as part of the awards presented by the Royal Swedish Academy of Sciences. 

The 2025 Nobel Prize in Physics has been awarded to John Clarke, Michel H. Devoret, and John M. Martinis for their pioneering work that revealed quantum mechanical effects in superconducting electronic circuits.

Their experiments demonstrated that phenomena once thought to exist only at the atomic scale—such as quantum tunnelling and energy quantisation—can also occur in circuits large enough to hold in the palm of a hand. By constructing superconducting chips with Josephson junctions, the trio showed that billions of electrons could behave collectively as a single quantum system.

This discovery bridges the microscopic and macroscopic worlds of physics, confirming that quantum mechanics governs not only the smallest particles but also engineered systems visible to the naked eye. The research has laid the foundation for quantum computing, quantum sensors, and advanced cryptography, technologies expected to transform science and industry in the decades ahead.

In awarding the prize, the Royal Swedish Academy of Sciences praised the laureates for “making quantum mechanics tangible on a macroscopic scale,” underscoring how century-old theory continues to surprise and inspire.