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Clarke, Devoret and Martinis Win 2025 Nobel Prize in Physics for Macroscopic Quantum Phenomena

The committee cited superconducting‑circuit experiments that brought quantum behavior into hand‑scale devices.

Overview

  • Sweden’s Royal Academy honored John Clarke, Michel H. Devoret and John M. Martinis for the discovery of macroscopic quantum tunneling and energy quantization in an electrical circuit.
  • The laureates’ 1984–85 Josephson‑junction experiments showed a superconducting circuit exhibiting tunneling and discrete energy levels at a scale large enough to handle.
  • The Nobel Committee framed the work as foundational for superconducting qubits and highlighted future applications in quantum computers, cryptography and sensors.
  • The trio will share 11 million Swedish kronor, with the formal Nobel ceremony scheduled for December 10 in Stockholm.
  • Clarke is at UC Berkeley, Devoret has worked at UC Santa Barbara and Yale, and Martinis later led Google’s superconducting‑qubit effort, including a 2019 53‑qubit milestone.