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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.01847 |
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| _version_ | 1866929405885939712 |
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| author | Monroe, David Shen, Chenghao Tringali, Dario Alidoust, Mohammad Zhou, Tong Žutić, Igor |
| author_facet | Monroe, David Shen, Chenghao Tringali, Dario Alidoust, Mohammad Zhou, Tong Žutić, Igor |
| contents | Planar Josephson junctions (JJs), based on common superconductors and III-V semiconductors, are sought for Majorana states and fault-tolerant quantum computing. However, with gate-tunable spin-orbit coupling (SOC), we show that the range of potential applications of such JJs becomes much broader. The time-dependent SOC offers unexplored mechanisms for switching JJs, accompanied by the $2π$-phase jumps and the voltage pulses corresponding to the single-flux-quantum transitions, key to high-speed and low-power superconducting electronics. In a constant applied magnetic field, with Rashba and Dresselhaus SOC, anharmonic current-phase relations, calculated microscopically in these JJs, yield a nonreciprocal transport and superconducting diode effect. Together with the time-dependent SOC, this allows us to identify a switching mechanism at no applied current bias which supports fractional-flux-quantum superconducting circuits and neuromorphic computing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_01847 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Phase jumps in Josephson junctions with time-dependent spin-orbit coupling Monroe, David Shen, Chenghao Tringali, Dario Alidoust, Mohammad Zhou, Tong Žutić, Igor Superconductivity Planar Josephson junctions (JJs), based on common superconductors and III-V semiconductors, are sought for Majorana states and fault-tolerant quantum computing. However, with gate-tunable spin-orbit coupling (SOC), we show that the range of potential applications of such JJs becomes much broader. The time-dependent SOC offers unexplored mechanisms for switching JJs, accompanied by the $2π$-phase jumps and the voltage pulses corresponding to the single-flux-quantum transitions, key to high-speed and low-power superconducting electronics. In a constant applied magnetic field, with Rashba and Dresselhaus SOC, anharmonic current-phase relations, calculated microscopically in these JJs, yield a nonreciprocal transport and superconducting diode effect. Together with the time-dependent SOC, this allows us to identify a switching mechanism at no applied current bias which supports fractional-flux-quantum superconducting circuits and neuromorphic computing. |
| title | Phase jumps in Josephson junctions with time-dependent spin-orbit coupling |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2407.01847 |