Integrating micromagnets and hybrid nanowires for topological quantum computing

Jardine, Malcolm; Stenger, John; Jiang, Yifan; de Jong, Eline J.; Wang, Wenbo; Bleszynski Jayich, Ania C.; Frolov, Sergey M.

doi:10.21468/SciPostPhys.11.5.090

SciPost Physics

Integrating micromagnets and hybrid nanowires for topological quantum computing

Malcolm J. A. Jardine, John P. T. Stenger, Yifan Jiang, Eline J. de Jong, Wenbo Wang, Ania C. Bleszynski Jayich, Sergey M. Frolov

SciPost Phys. 11, 090 (2021) · published 12 November 2021

doi: 10.21468/SciPostPhys.11.5.090
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Abstract

Majorana zero modes are expected to arise in semiconductor-superconductor hybrid systems, with potential topological quantum computing applications. One limitation of this approach is the need for a relatively high external magnetic field that should also change direction at the nanoscale. This proposal considers devices that incorporate micromagnets to address this challenge. We perform numerical simulations of stray magnetic fields from different micromagnet configurations, which are then used to solve for Majorana wavefunctions. Several devices are proposed, starting with the basic four-magnet design to align magnetic field with the nanowire and scaling up to nanowire T-junctions. The feasibility of the approach is assessed by performing magnetic imaging of prototype patterns.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.11.5.090
TI  - Integrating micromagnets and hybrid nanowires for topological quantum computing
PY  - 2021/11/12
UR  - https://scipost.org/SciPostPhys.11.5.090
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 11
IS  - 5
SP  - 090
A1  - Jardine, Malcolm
AU  - Stenger, John
AU  - Jiang, Yifan
AU  - de Jong, Eline J.
AU  - Wang, Wenbo
AU  - Bleszynski Jayich, Ania C.
AU  - Frolov, Sergey M.
AB  - Majorana zero modes are expected to arise in semiconductor-superconductor hybrid systems, with potential topological quantum computing applications. One limitation of this approach is the need for a relatively high external magnetic field that should also change direction at the nanoscale. This proposal considers devices that incorporate micromagnets to address this challenge. We perform numerical simulations of stray magnetic fields from different micromagnet configurations, which are then used to solve for Majorana wavefunctions. Several devices are proposed, starting with the basic four-magnet design to align magnetic field with the nanowire and scaling up to nanowire T-junctions. The feasibility of the approach is assessed by performing magnetic imaging of prototype patterns.
ER  -

@Article{10.21468/SciPostPhys.11.5.090,
	title={{Integrating micromagnets and hybrid nanowires for topological quantum computing}},
	author={Malcolm J. A. Jardine and John P. T. Stenger and Yifan Jiang and Eline J. de Jong and Wenbo Wang and Ania C. Bleszynski Jayich and Sergey M. Frolov},
	journal={SciPost Phys.},
	volume={11},
	pages={090},
	year={2021},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.11.5.090},
	url={https://scipost.org/10.21468/SciPostPhys.11.5.090},
}

Cited by 10

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¹ Malcolm Jardine,
¹ John Stenger,
¹ Yifan Jiang,
² Eline J. de Jong,
³ Wenbo Wang,
³ Ania C. Bleszynski Jayich,
¹ Sergey M. Frolov

Funders for the research work leading to this publication