Planar Josephson junctions: From topological superconductivity to a time-dependent diode effect

David A. Monroe; Tong Zhou; Dario Tringali; Mohammad Alidoust; Javad Shabani; Igor Zutic

doi:10.1117/12.2680776

5 October 2023 Planar Josephson junctions: From topological superconductivity to a time-dependent diode effect

David A. Monroe, Tong Zhou, Dario Tringali, Mohammad Alidoust, Javad Shabani, Igor Zutic

Proceedings Volume PC12656, Spintronics XVI; PC126561A (2023) https://doi.org/10.1117/12.2680776
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Planar Al/InAs Josephson junctions (JJs) provide an attractive platform for topological superconductivity and fault-tolerant quantum computing. Surprisingly, we show that with a gate-tunable spin-orbit coupling (SOC), these JJs also support a much broader range of applications. The time-dependent SOC offers unexplored mechanisms for switching JJs, accompanied by the 2π-phase jumps and voltage pulses corresponding to single-flux-quantum transitions. In a constant applied magnetic field, with SOC, anharmonic current-phase relations, calculated microscopically in these JJs, yield a nonreciprocal transport and time-dependent superconducting diode effect. This supports a novel switching mechanism at no applied current bias and supporting fractional-flux-quantum superconducting circuits.

Conference Presentation

Citation Download Citation

David A. Monroe, Tong Zhou, Dario Tringali, Mohammad Alidoust, Javad Shabani, and Igor Zutic "Planar Josephson junctions: From topological superconductivity to a time-dependent diode effect", Proc. SPIE PC12656, Spintronics XVI, PC126561A (5 October 2023); https://doi.org/10.1117/12.2680776

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