Josephson vortex-based memory

Josephson junctions are currently used as base elements of superconducting logic systems. Long enough junctions subject to magnetic field host quantum phase 2{\pi}-singularities - Josephson vortices. Here we report the realization of the superconducting memory whose state is encoded by the number of...

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Bibliographic Details
Published inarXiv.org
Main Authors Kalashnikov, Dmitrii S, Ruzhitskiy, Vsevolod I, Shishkin, Andrey G, Golovchanskiy, Igor A, Mikhail Yu Kupriyanov, Soloviev, Igor I, Roditchev, Dimitri, Stolyarov, Vasily S
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 19.08.2023
Subjects
Critical current (superconductivity)
Josephson junctions
Physics - Applied Physics
Physics - Superconductivity
Superconductivity
Vortices
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Summary:Josephson junctions are currently used as base elements of superconducting logic systems. Long enough junctions subject to magnetic field host quantum phase 2{\pi}-singularities - Josephson vortices. Here we report the realization of the superconducting memory whose state is encoded by the number of present Josephson vortices. By integrating the junction into a coplanar resonator and by applying a microwave excitation well below the critical current, we were able to control the state of the memory in an energy-efficent and non-destructive manner. The performance of the device is evaluated, and the routes for creating scalable cryogenic memories directly compatible with superconducting microwave technologies are discussed.
ISSN:2331-8422
DOI:10.48550/arxiv.2308.09995