Abstract
We report the first observation of quantized energy levels for a macroscopic variable, namely the phase difference across a current-biased Josephson junction in its zero-voltage state. The position of these energy levels is in quantitative agreement with a quantum mechanical calculation based on parameters of the junction that are measured in the classical regime.
- Received 14 June 1985
DOI:https://doi.org/10.1103/PhysRevLett.55.1543
©1985 American Physical Society