| Category | Details |
|---|---|
| Event | Nobel Prize in Physics 2025 |
| Laureates | John Clarke, Michel H. Devoret, John M. Martinis |
| Institutions | University of California, Berkeley; Yale University; University of California, Santa Barbara |
| Research Topic | Macroscopic Quantum Mechanical Tunnelling and Energy Quantisation in an Electric Circuit |
| Key Discovery | Demonstrated quantum phenomena in a macroscopic electrical circuit |
| Central Question | How large can a system be and still exhibit quantum mechanical effects? |
| Traditional View | Quantum behavior observable only at atomic or subatomic scales |
| Breakthrough | Proved quantum phenomena can occur in systems visible to the naked eye |
| Technology Implications | Quantum Computing, Quantum Cryptography, Quantum Sensors |
| Experiment | Constructed an electronic circuit using superconductors separated by a thin non-conductive barrier (Josephson Junction) |
| Key Findings | Macroscopic Quantum Tunnelling and Energy Quantisation |
| Quantum Tunnelling | System behaved like a single particle, escaping a zero-voltage state through tunneling |
| Energy Quantisation | Macroscopic system absorbed or emitted discrete amounts of energy, confirming quantum principles |
| Laureate Backgrounds | John Clarke: Born 1942, UK. PhD, University of Cambridge. Professor, UC Berkeley. |
| Michel H. Devoret: Born 1953, France. PhD, Paris-Sud University. Professor, Yale University and UC Santa Barbara. | |
| John M. Martinis: Born 1958, USA. PhD, UC Berkeley. Professor, UC Santa Barbara. |
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