Report on 2406.14435v1

Abstract

In the field of superconducting electronics, the on-chip generation of AC radiation is essential for further advancements.Although a Josephson junction can emit AC radiation from a purely DC voltage bias, the coherence of this radiation is significantly limited by Johnson-Nyquist noise.We relate this limitation to the thermodynamic uncertainty relation (TUR) in the field of stochastic thermodynamics.Recent findings indicate that the thermodynamic uncertainty relation can be broken by a classical pendulum clock.We demonstrate how the violation of the TUR can be used as a design principle for radiation sources by showing that a superconducting clock circuit emits coherent AC radiation from a DC bias.

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