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Double-Fourier engineering of Josephson energy-phase relationships applied to diodes

A. Mert Bozkurt, Jasper Brookman, Valla Fatemi, Anton R. Akhmerov

SciPost Phys. 15, 204 (2023) · published 24 November 2023


We present a systematic method to design arbitrary energy-phase relations using parallel arms of two series Josephson tunnel junctions each. Our approach employs Fourier engineering in the energy-phase relation of each arm and the position of the arms in real space. We demonstrate our method by engineering the energy-phase relation of a near-ideal superconducting diode, which we find to be robust against the imperfections in the design parameters. Finally, we show the versatility of our approach by designing various other energy-phase relations.

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Josephson junction

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