Manipulating multi-vortex states in superconducting structures
arXiv:1905.06303 · doi:10.1021/acs.nanolett.9b01983
Abstract
We demonstrate a method for manipulating small ensembles of vortices in multiply-connected superconducting structures. A micron-size magnetic particle attached to the tip of a silicon cantilever is used to locally apply magnetic flux through the superconducting structure. By scanning the tip over the surface of the device, and by utilizing the dynamical coupling between the vortices and the cantilever, a high-resolution spatial map of the different vortex configurations is obtained. Moving the tip to a particular location in the map stabilizes a distinct multi-vortex configuration. Thus, the scanning of the tip over a particular trajectory in space permits non-trivial operations to be performed, such as braiding of individual vortices within a larger vortex ensemble -- a key capability required by many proposals for topological quantum computing.
arXiv comment14 pages, 9 figures
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Cited by in corpus (10)
- Laser modulation of superconductivity in a cryogenic widefield nitrogen-vacancy microscope
- Braiding Majorana Fermions and Creating Quantum Logic Gates with Vortices on a Periodic Pinning Structure
- Josephson junctions in a local inhomogeneous magnetic field
- Vortex Majorana braiding in a finite time
- Optical vortex manipulation for topological quantum computation
- Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays
- Active Rheology and Anti-Commensuration Effects For Driven Probe Particles on Two Dimensional Periodic Pinning Substrates
- Holographic reconstruction of magnetic field distribution in a Josephson junction from diffraction-like Ic(H) patterns
- Mirror-protected Majorana zero modes in -wave multilayer graphene superconductors
- Numerical modelling of a vortex-based superconducting memory cell: dynamics and geometrical optimization of a fluxonic quantum dot