On chip synchronization of Bloch oscillations in a strongly coupled pair of small Josephson junctions
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| Soggetti: | |
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| _version_ | 1866916090666287104 |
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| author | Kaap, Fabian Scheer, David Hassler, Fabian Lotkhov, Sergey |
| author_facet | Kaap, Fabian Scheer, David Hassler, Fabian Lotkhov, Sergey |
| contents | Bloch oscillations are a fundamental phenomenon linking the adiabatic transport of Cooper pairs to time. Here, we investigate synchronization of the Bloch oscillations in a strongly coupled system of sub-100 nm Al/AlOx/Al Josephson junctions in high-ohmic environment composed of highly inductive meanders of granulated aluminum and high-ohmic titanium microstrips. We observe a pronounced current mirror eff ect in the coupled junctions and demonstrate current plateaus, akin to the fi rst dual Shapiro step in microwave experiments. These fi ndings suggest that our circuit design holds promise for realizing protected Bloch oscillations and precise Shapiro steps of interest for current metrology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_06996 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | On chip synchronization of Bloch oscillations in a strongly coupled pair of small Josephson junctions Kaap, Fabian Scheer, David Hassler, Fabian Lotkhov, Sergey Mesoscale and Nanoscale Physics Superconductivity Bloch oscillations are a fundamental phenomenon linking the adiabatic transport of Cooper pairs to time. Here, we investigate synchronization of the Bloch oscillations in a strongly coupled system of sub-100 nm Al/AlOx/Al Josephson junctions in high-ohmic environment composed of highly inductive meanders of granulated aluminum and high-ohmic titanium microstrips. We observe a pronounced current mirror eff ect in the coupled junctions and demonstrate current plateaus, akin to the fi rst dual Shapiro step in microwave experiments. These fi ndings suggest that our circuit design holds promise for realizing protected Bloch oscillations and precise Shapiro steps of interest for current metrology. |
| title | On chip synchronization of Bloch oscillations in a strongly coupled pair of small Josephson junctions |
| topic | Mesoscale and Nanoscale Physics Superconductivity |
| url | https://arxiv.org/abs/2306.06996 |