Embassy of the Republic of Croatia – Stockholm

On the occasion of the 2025 Nobel Prize in Physics Award to Professor John M. Martinis, the Ambassador of the Republic of Croatia, kindly requests the pleasure of the company of Mr Peter Johansson – Cawa Media

at a Reception in honor of Professor Martinis, on Friday, 12 December 2025, from 12:00 (noon) to 13:30 at the Swedish History Museum, Narvavägen 13-17, Stockholm

John M. Martinis Nobel Prize in Physics 2025 Born: 1958

Affiliation at the time of the award: University of California, Santa Barbara, CA, USA; Qolab, Los Angeles, CA, USA Prize motivation: “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit” In quantum mechanics, particles can move straight through a barrier, in a process called tunnelling. Quantum mechanical behaviour is mainly exhibited at extremely microscopic scales. However, in 1984 and 1985, John M. Martinis, Michel H. Devoret and John Clarke demonstrated quantum mechanical properties on a macroscopic scale. In an electrical circuit built from superconductors – which conduct current without any resistance – tunnelling through an insulating layer occurred because the charged particles behaved as a single particle.