A chip-based superconducting magnetic trap for levitating superconducting microparticles

• URL: http://arxiv.org/abs/2109.15071v2
• Date: Wed, 9 Mar 2022 21:11:30 GMT
• Title: A chip-based superconducting magnetic trap for levitating superconducting microparticles
• Authors: Mart\'i Gutierrez Latorre, Achintya Paradkar, David Hambraeus, Gerard Higgins, Witlef Wieczorek
• Abstract summary: We demonstrate the 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 0.5$,mu$m to 200$,mu$m.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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 0.5$\,\mu$m to 200$\,\mu$m. 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 50\,$\mu$m diameter SnPb microparticle at temperatures of 4\,K and 40\,mK.

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