Published November 1, 1985 | Version v1
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Energy-Level Quantization in the Zero-Voltage State of a Current-Biased Josephson Junction

Description

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.

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