Michel H. Devoret coauthored a 1985 measurement of macroscopic quantum tunnelling in a current-biased Josephson junction. At higher temperatures, escape from the zero-voltage state characterized the junction in a thermal regime. At low temperatures, the escape rate stopped depending on temperature and agreed with the predicted quantum escape rate using those independently determined parameters. The comparison supplied quantitative evidence for tunnelling of the collective circuit coordinate, rather than merely observing an unexplained low-temperature switching rate.[ref]
Portrait of Michel H. Devoret
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- Energy-Level Quantization in the Zero-Voltage State of a Current-Biased Josephson Junction by John M. Martinis and others
- Manipulating the Quantum State of an Electrical Circuit by Denis Vion and others
- Measurements of Macroscopic Quantum Tunneling out of the Zero-Voltage State of a Current-Biased Josephson Junction by Michel H. Devoret and others
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