Engineering of anomalous Josephson effect in coherently coupled Josephson junctions
arXiv:2305.06596 · doi:10.1126/sciadv.adj3698
Abstract
A Josephson junction (JJ) is a key device in the development of superconducting circuits, wherein a supercurrent in the JJ is controlled by the phase difference between the two superconducting electrodes. Recently, it has been shown that the JJ current is nonlocally controlled by the phase difference of another nearby JJ via coherent coupling. Here, we use the nonlocal control to engineer the anomalous Josephson effect. We observe that a supercurrent is produced by the nonlocal phase control even without any local phase difference, using a quantum interference device. The nonlocal phase control simultaneously generates an offset of a local phase difference giving the JJ ground state. These results provide novel concepts for engineering superconducting devices such as phase batteries and dissipationless rectifiers.
15 pages and 4 figures for the main manuscript, 8 pages and 6 figures for the supplementary information
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Cited by in corpus (21)
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- Strong nonlocal tuning of the current-phase relation of a quantum dot based Andreev molecule
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- Superconducting Diode Effect in Double Quantum Dot Device
- Andreev molecules at distance
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- Directional conductance of Andreev crystals in hybrid Josephson junction arrays