Patent ID: 11955465
Assignee: GOOGLE LLC
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method comprising:
providing a first chip comprising a qubit;
providing a substrate;
forming a single superconductor layer directly on a first surface of the substrate;
patterning the single superconductor layer to form at least one circuit element on the first surface of the substrate, wherein the at least one circuit element on the first surface of the substrate comprises a qubit readout resonator;
forming a plurality of layers on a second surface of the substrate that is opposite to the first surface of the substrate,
wherein the plurality of layers comprise at least one dielectric layer and at least one additional superconductor layer;
patterning the plurality of layers on the second surface of the substrate to form at least one circuit element on the second surface of the substrate;
forming a connector that extends from the first surface of the substrate to the second surface of the substrate to electrically connect a first circuit element on the first surface of the substrate to a first circuit element on the second surface of the substrate; and
joining the first chip to the substrate to form a stacked circuit device,
wherein there is no deposited dielectric material on the surface of the qubit readout resonator that faces the first chip, and wherein the qubit readout resonator is arranged to operably couple to the qubit of the first chip.