Method for preparing a josephson junction, apparatus, and device, and superconducting device

A system, for preparing a Josephson junction, the system comprising:

• at least one processor;
• and
• at least one memory containing a set of first instructions, the set of first instructions executable by the at least one processor to cause the system to perform operations for use in fabricating a superconducting circuit, the operations comprising:
• providing second instructions to evaporate, from an etched substrate comprising (i) a first pattern structure for generating a first Josephson junction of a first type and (ii) a plurality of second pattern structures for generating a plurality of second Josephson junctions of a second type, a junction area of the first Josephson junction differing from a junction area of at least one of the plurality of second Josephson junctions, a material on the first pattern structure and the plurality of second pattern structures based on a first evaporation direction to generate a first electrode layer, wherein the first evaporation direction is substantially parallel to an edge of the first pattern structure and an edge of at least one of the plurality of second pattern structures;
• providing third instructions to form an insulating layer on the first electrode layer, the insulating layer comprising a compound corresponding to the material;
• providing fourth instructions to evaporate the material on the first pattern structure and the plurality of second pattern structures based on a second evaporation direction to generate a second electrode layer, wherein the second evaporation direction is substantially parallel to the edge of the first pattern structure and the edge of the at least one of the plurality of second pattern structures;
• and
• providing fifth instructions to form the first Josephson junction based on the first electrode layer generated on the first pattern structure, the insulating layer, and the second electrode layer generated on the first pattern structure, and forming the plurality of second Josephson junctions based on the first electrode layer generated on the plurality of second pattern structures, the insulating layer, and the second electrode layer generated on the plurality of second pattern structures.

A non-transitory, computer-readable medium containing a set of first instructions, the set of first instructions executable by at least one processor of a system to cause the system to perform operations for use in fabricating a superconducting circuit, the operations comprising:

• providing second instructions to evaporate, from an etched substrate comprising (i) a first pattern structure for generating a first Josephson junction of a first type and (ii) a plurality of second pattern structures for generating a plurality of second Josephson junctions of a second type, a junction area of the first Josephson junction differing from a junction area of at least one of the plurality of second Josephson junctions, a material on the first pattern structure and the plurality of second pattern structures based on a first evaporation direction to generate a first electrode layer, wherein the first evaporation direction is substantially parallel to an edge of the first pattern structure and an edge of at least one of the plurality of second pattern structures;
• providing third instructions to form an insulating layer on the first electrode layer, the insulating layer comprising a compound corresponding to the material;
• providing fourth instructions to evaporate the material on the first pattern structure and the plurality of second pattern structures based on a second evaporation direction to generate a second electrode layer, wherein the second evaporation direction is substantially parallel to the edge of the first pattern structure and the edge of the at least one of the plurality of second pattern structures;
• and
• providing fifth instructions to form the first Josephson junction based on the first electrode layer generated on the first pattern structure, the insulating layer, and the second electrode layer generated on the first pattern structure, and forming the plurality of second Josephson junctions based on the first electrode layer generated on the plurality of second pattern structures, the insulating layer, and the second electrode layer generated on the plurality of second pattern structures.