Local current injection into mesoscopic superconductors for the manipulation of quantum states

Abstract

We perform strategic current injection in a small mesoscopic superconductor and control the (non)equilibrium quantum states in an applied homogeneous magnetic field. In doing so, we realize a current-driven splitting of multi-quanta vortices, current-induced transitions between states with different angular momenta, and current-controlled switching between otherwise degenerate quantum states. These fundamental phenomena form the basis for discussed electronic and logic applications, and are confirmed in both theoretical simulations and multiple-small-tunnel-junction transport measurements.

To appear in Physical Review Letters

References in corpus (5)

• Quantised Vortices in an Exciton-Polariton Fluid
• Tuning the conductance of a molecular switch
• Fluxonic Cellular Automata
• Tunable conductance of magnetic nanowires with structured domain walls
• Giant vortices in rotating electron droplets

Cited by in corpus (19)

• Vortical versus skyrmionic states in mesoscopic \emph{p}-wave superconductors
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• Josephson junctions in a local inhomogeneous magnetic field
• Mechanism of generation of a Josephson phase shift by an Abrikosov vortex
• Weber blockade in superconducting nanowires
• Manipulating multi-vortex states in superconducting structures
• Dynamics and heat diffusion of Abrikosov's vortex-antivortex pairs during an annihilation process
• Vortex manipulation in a superconducting matrix with view on applications
• Word and bit line operation of a 1x1 μm2 superconducting vortex-based memory
• Individual Vortex Manipulation and Stick-Slip Motion in Periodic Pinning Arrays
• Thermal suppression of surface barrier in ultrasmall superconducting structures
• Probing confined vortices with a superconducting nanobridge
• Branching of the vortex nucleation period in superconductor Nb microtubes due to inhomogeneous transport current
• Study of the threshold line between macroscopic and bulk behaviors for homogeneous type II superconductors
• Vortex-antivortex annihilation in mesoscopic superconductors with a central pinning center
• Origin of Matching Effect in Anti-dot Array of Superconducting NbN Thin Films
• Supercurrent diode with high winding vortex
• Numerical modelling of a vortex-based superconducting memory cell: dynamics and geometrical optimization of a fluxonic quantum dot
• Gradient Flow in the Ginzburg-Landau Model of Superconductivity