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arXiv · 2112.12960

Observation of nonlocal Josephson effect on double InAs nanowires

Sadashige Matsuo·Joon Sue Lee·Chien-Yuan Chang·Yosuke Sato·Kento Ueda·Christopher J. Palmstrøm·Seigo Tarucha
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Abstract

Short-range coherent coupling of two Josephson junctions (JJs) are predicted to generate a supercurrent in one JJ nonlocally modulated by the phase difference in the other. We report on observation of the nonlocal Josephson effect on double InAs nanowires as experimental evidence of the coherent coupling. We measured one JJ sharing one superconducting electrode with the other JJ and observed switching current oscillation as a control of the nonlocal phase difference. Our result is an important step toward engineering of novel superconducting phenomena with the short-range coherent coupling.

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Sadashige Matsuo, Joon Sue Lee, Chien-Yuan Chang, Yosuke Sato, Kento Ueda, Christopher J. Palmstrøm, Seigo Tarucha. 2021-12-24. Observation of nonlocal Josephson effect on double InAs nanowires. https://doi.org/10.1038/s42005-022-00994-0

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