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.
quantum technology
Superconducting magnets
Magnetic levitation
finite element method (FEM)
integrated devices
superconducting coils
Magnetic resonance imaging
magnetic levitation
Electron traps
Wires
Magnetic separation
Superconducting coils
superconducting devices
Author
Martí Gutierrez
Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems
Achintya Paradkar
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
David Hambraeus
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Gerard Higgins
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Witlef Wieczorek
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
IEEE Transactions on Applied Superconductivity
1051-8223 (ISSN) 15582515 (eISSN)
Vol. 32 4Subject Categories
Other Physics Topics
Other Electrical Engineering, Electronic Engineering, Information Engineering
Condensed Matter Physics
DOI
10.1109/TASC.2022.3147730