Abstract: This disclosure relates to Superconducting Quantum Interference Apparatuses, such as SQUID arrays and SQUIFs. A superconducting quantum interference apparatus comprises an array of loops each loop constituting a superconducting quantum interference device. The array comprises multiple columns, each of the columns comprises multiple rows connected in series, each of the multiple rows comprises a number of loops connected in parallel, and the number of loops connected in parallel in each row is more than two and less than 20 to improve a performance of the apparatus. It is an advantage that keeping the number of loops in parallel below 20 improves the performance of the apparatus. This is contrary to existing knowledge where it is commonly assumed that a larger number of parallel loops would increase performance.

Abstract: This disclosure relates to fabrication of step edges to fabricate Josephson junctions. A method comprises forming a layer of resist over the surface. The layer of resist comprises openings to expose a selected area of the surface, thereby forming two walls in the layer of resist on a perimeter of the selected area. The resist and the substrate are exposed to an ion beam, thereby etching the resist and the exposed areas of the surface. While exposing the resist and the substrate to the ion beam, the substrate is gradually rotated about an axis normal to the surface to thereby form two step edges at the respective two walls. Further, superconducting material is deposited onto the substrate in a meandering shape to form a path that crosses the two step edges multiple times and to form a Josephson junction each time the path crosses the step edges.

Abstract: This disclosure relates to fabrication of step edges to fabricate Josephson junctions. A method comprises forming a layer of resist over the surface. The layer of resist comprises openings to expose a selected area of the surface, thereby forming two walls in the layer of resist on a perimeter of the selected area. The resist and the substrate are exposed to an ion beam, thereby etching the resist and the exposed areas of the surface. While exposing the resist and the substrate to the ion beam, the substrate is gradually rotated about an axis normal to the surface to thereby form two step edges at the respective two walls. Further, superconducting material is deposited onto the substrate in a meandering shape to form a path that crosses the two step edges multiple times and to form a Josephson junction each time the path crosses the step edges.

Abstract: This disclosure relates to Superconducting Quantum Interference Apparatuses, such as SQUID arrays and SQUIFs. A superconducting quantum interference apparatus comprises an array of loops each loop constituting a superconducting quantum interference device. The array comprises multiple columns, each of the columns comprises multiple rows connected in series, each of the multiple rows comprises a number of loops connected in parallel, and the number of loops connected in parallel in each row is more than two and less than 20 to improve a performance of the apparatus. It is an advantage that keeping the number of loops in parallel below 20 improves the performance of the apparatus. This is contrary to existing knowledge where it is commonly assumed that a larger number of parallel loops would increase performance.

Abstract: An example article includes a body. The body defines at least one damping pocket, at least one body opening defined in an outer surface of the body, and an at least one escape channel. The at least one damping pocket is fluidically coupled to the at least one body opening by the at least one escape channel. The article includes a predetermined volume of damping material enclosed in the at least one damping pocket. An example technique includes additively manufacturing the article including the body. An example system includes an additive manufacturing tool, and a computing device configured to control the additive manufacturing tool to additively manufacture the article including the body.