Chip-Integrated Vortex Manipulation

Abstract

Abrikosov Vortices have long been considered as means to encode classical information in low-temperature logic circuits (1) and memory devices (2-4). Although it is possible to control individual vortices using local probes (5-11), scalability towards the control of of multiple vortices remains challenging. Vortex logic devices require means to shuttle selected vortices reliably over long distances between engineered pinning potentials. Concomitantly, all other vortices should remains fixed to their precise locations. Here we demonstrate such capabilities using Nb loops patterned below a NbSe${}_2$ layer. SQUID-on-Tip (SOT) microscopy reveals that the loops can position vortices in sites designated to a precision better than 100 nm; they can realize "push" and "pull" operations of vortices as far as 3$\mu$m. Successive application of such operations shuttles a vortex between adjacent loops. Our results may be used as means to integrate vortices in future quantum circuitry. Strikingly, we are able to demonstrate a winding operation. Such winding, if realized in topological superconductors, is considered an essential part of future topological quantum information processing (12-17).

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Cited by in corpus (8)

• Word and bit line operation of a 1x1 μm2 superconducting vortex-based memory
• Vortex matching at 6 T in YBa${}_2$Cu${}_3$O${}_{7-\delta }$ thin films by imprinting a 20 nm-periodic pinning array with a focused helium ion beam
• Quantum thermodynamics with a single superconducting vortex
• Numerical modelling of a vortex-based superconducting memory cell: dynamics and geometrical optimization of a fluxonic quantum dot
• Nucleation and Arrangement of Abrikosov Vortices in Hybrid Superconductor-Ferromagnetic Nanostructure
• Equidistant resonance jumps in superconducting coplanar resonators driven by Abrikosov vortices
• Scheme for braiding Majorana zero modes in vortices using an STT-matrix
• Quantum Mechanics of an Abrikosov Vortex in Nanofabricated Pinning Potential