John M. Martinis

John M. Martinis
Martinis in 2025
Born
John Matthew Martinis

1958 (age 67–68)
United States
EducationUniversity of California, Berkeley (BS, PhD)
Awards
Scientific career
FieldsPhysics
ThesisMacroscopic Quantum Tunneling and Energy-Level Quantization in the Zero Voltage State of the Current-Biased Josephson Junction (1985)
Doctoral advisorJohn Clarke

John Matthew Martinis (born 1958) is an American physicist and professor of physics at the University of California, Santa Barbara. He led a team to develop a superconducting quantum computer at Google Quantum AI Lab, a partnership between UC Santa Barbara and Google. With the Sycamore processor, they claimed the first evidence of quantum supremacy in 2019.

He shared the 2025 Nobel Prize in Physics with John Clarke and Michel Devoret for their joint work on macroscopic quantum phenomena in superconductors.