A chip-based superconducting magnetic trap for levitating superconducting microparticles

Martí Gutierrez Latorre; Achintya Paradkar; David Hambraeus; Gerard Higgins; Witlef Wieczorek

doi:10.1109/TASC.2022.3147730

A chip-based superconducting magnetic trap for levitating superconducting microparticles
Journal article, 2022

Magnetically-levitated superconducting microparticles have been recently proposed as a promising platform for performing quantum experiments with particles in the picogram regime. Here, we demonstrate the superconducting technology to achieve chip-based magnetic levitation of superconducting microparticles. We simulate and fabricate a chip-based magnetic trap capable of levitating superconducting particles with diameters from 0.5m to 200m. The trap consists of two stacked silicon chips, each patterned with a planar multi-winding superconducting coil made of niobium. The two coils generate a magnetic field resembling a quadrupole near the trap center, in which we demonstrate trapping of a spherical 50m diameter SnPb microparticle at temperatures of 4K and 40mK.

Wires

Magnetic resonance imaging

Magnetic separation

Electron traps

superconducting devices

finite element method (FEM)

superconducting coils

quantum technology

Magnetic levitation

magnetic levitation

Superconducting magnets

integrated devices

Superconducting coils