US 12,322,524 B2
Flux-trapping magnetic films in superconducting circuits
Daniel Robert Queen, Kensington, MD (US)
Assigned to NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US)
Filed by Daniel Robert Queen, Kensington, MD (US)
Filed on Feb. 14, 2022, as Appl. No. 17/670,678.
Prior Publication US 2023/0260679 A1, Aug. 17, 2023
Int. Cl. H01B 12/06 (2006.01); H01B 12/16 (2006.01); H01F 10/14 (2006.01); H01F 10/16 (2006.01); H10N 60/80 (2023.01)
CPC H01B 12/06 (2013.01) [H01B 12/16 (2013.01); H01F 10/14 (2013.01); H01F 10/16 (2013.01); H10N 60/80 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A superconducting circuit comprising:
superconducting circuitry fabricated in a circuit layer, the circuit layer comprising a first surface and a second surface opposite the first surface;
a flux moat comprising a dielectric material formed in the circuit layer, the flux moat being configured to trap a magnetic flux as the superconducting circuit is cooled to below a superconducting critical temperature; and
a magnetic film arranged proximal to the flux moat on at least one of the first and second surfaces of the circuit layer, the magnetic film being configured to guide the magnetic flux to the flux moat as the superconducting circuit is cooled to below the superconducting critical temperature.