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  Vortex control in superconducting Corbino geometry networks

Okugawa, T., Park, S., Recher, P., & Kennes, D. M. (2021). Vortex control in superconducting Corbino geometry networks.

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2111.14686.pdf (Preprint), 22MB
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2111.14686.pdf
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https://arxiv.org/abs/2111.14686 (Preprint)
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 Creators:
Okugawa, T.1, Author
Park, S.2, Author
Recher, P.3, 4, Author
Kennes, D. M.1, 5, 6, Author              
Affiliations:
1Institut für Theorie der Statistischen Physik, RWTH Aachen and JARA - Fundamentals of Future Information Technology, ou_persistent22              
2Departamento de Física Teórica de la Materia Condensada, Condensed Matter Physics Center (IFIMAC) and Instituto Nicolás Cabrera, Universidad Autónoma de Madrid, ou_persistent22              
3Institut für Mathematische Physik, Technische Universität Braunschweig, ou_persistent22              
4Laboratory for Emerging Nanometrology Braunschweig, ou_persistent22              
5Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
6Center for Free Electron Laser Science, ou_persistent22              

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Free keywords: Condensed Matter, Superconductivity, cond-mat.supr-con
 Abstract: In superconductors, vortices induced by a magnetic field are nucleated randomly due to some random fluctuations or pinned by impurities or boundaries, impeding the development of vortex based quantum devices. Here, we propose a superconducting structure which allows to nucleate and control vortices on-demand by controlling magnetic fields and currents. Using time-dependent Ginzburg Landau theory, we study a driven vortex motion in two-dimensional Corbino geometries of superconductor-normal metal-superconductor Josephson junctions. We remedy the randomness of nucleation by introducing normal conducting rails to the Corbino disk to guide the nucleation process and motion of vortices towards the junction. We elaborate on the consequences of rail-vortex and vortex-vortex interactions to the quantization of resistance across the junction. Finally, we simulate the nucleations and manipulations of two and four vortices in Corbino networks, and discuss its application to Majorana zero mode braiding operations. Our study provides a potential route towards quantum computation with non-Abelian anyons.

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Language(s): eng - English
 Dates: 2021-11-29
 Publication Status: Published online
 Pages: 14
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: arXiv: 2111.14686
 Degree: -

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