Patent ID: 11910730
Assignee: ALIBABA GROUP HOLDING LIMITED
Field: nan (nan)
Classification: CPC H | IPC H

Claim 4:
5. A method for Josephson junction preparation, comprising:
acquiring a substrate structure; and
forming a first electrode layer on the substrate structure, forming an insulating layer on the first electrode layer, and forming a second electrode layer on the insulating layer, wherein the first electrode layer and the second electrode layer are composed of a preset material, the insulating layer is composed of a compound corresponding to the preset material, and the preset material comprises a non-aluminum superconducting material to prolong a coherence time of superconducting qubits, and wherein:
an arrangement of the insulating layer between the first electrode layer and the second electrode layer forms a Josephson junction, and
forming the second electrode layer on the insulating layer comprises forming a continuous bridge structure comprising:
a first end on the insulating layer,
a second end on the substrate structure, and
a middle sub-electrode between the first and send ends, the middle sub-electrode being disposed over and forming an air gap from the substrate structure.