Active moat system for flux trapping

A superconductor device comprising:

• a plurality of superconductor layers and dielectric layers interleaved with the plurality of superconductor layers, wherein at least one superconductor layer is a ground plane;
• superconductor circuitry that resides within one or more of the plurality of superconductor layers;
• and
• an active moat extending through the plurality of superconductor layers and the dielectric layers, the active moat comprising a heating element and an opening that extends through the plurality of superconductor layers and the dielectric layers, wherein at least one flux vortex caused by cryogenic cooling can be removed from at least one of the plurality of superconductor layers into the active moat by the activating of the active moat causing a surrounding region to heat and become normal and deactivating of the active moat to cause the pulling of the at least one vortex into the opening in the active moat.