Overview

• John Clarke, Michel Devoret and John Martinis won the 2025 Nobel Prize in Physics for demonstrating macroscopic quantum tunneling and quantized energy in an electric circuit.
• Their Josephson-junction superconducting chips showed a many-particle circuit behaving as a single quantum system, with tunneling revealed by a measurable voltage.
• The work laid foundations for quantum computing, precision sensors and advanced cryptography, with Martinis later applying the principles to early qubit prototypes.
• The laureates, affiliated with UC Berkeley, UC Santa Barbara and Yale, will equally share 11 million Swedish kronor.
• The Nobel awards ceremony in Stockholm is scheduled for December 10, 2025, following the Physics announcement during Nobel week.