US 12,633,641 B2Granted

Hybrid kinetic inductance devices for superconducting quantum computing

AssigneeGoogle Inc.

InventorsTheodore Charles White, Anthony Edward Megrant

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Abstract

A device includes: a substrate; a first superconductor layer on the substrate, the first superconductor layer having a first kinetic inductance; and a second superconductor layer on the first superconductor layer, the second superconductor layer having a second kinetic inductance that is lower than the first kinetic inductance, in which the second superconductor layer covers the first superconductor layer such that the second superconductor layer and the first superconductor layer have a same footprint, with the exception of at least a first region where the second superconductor layer is omitted so that the first superconductor layer and the second superconductor layer form a circuit element having a predetermined circuit parameter.

Claims16

Dependent claims

A device comprising:

a circuit element comprising a superconductor material,
wherein a first region of the circuit element has a first cross-sectional area exhibiting a first kinetic inductance,
wherein a second region of the circuit element has a second cross-sectional area exhibiting a second kinetic inductance, the first cross-sectional area being different from the second cross-sectional area such that the first kinetic inductance is different than the second kinetic inductance and such that the circuit element has a predetermined circuit parameter,
wherein the circuit element has a first thickness in the first region and a second thickness in the second region, in which the second thickness is less than the first thickness, and
wherein the first region is coupled in series with the second region without overlapping in a thickness direction.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/878,877Filed 1 Aug 2022 · continuation
Published: US 2022/0384930 A11 Dec 2022
Granted: 19 May 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H01P 7/086
Strip line resonators: coplanar waveguide resonators
G06N 10/40
Quantum computing, i.e. information processing based on quantum-mechanical phenomena: physical realisations or architectures of quantum processors…
H10N 60/0241
Manufacture or treatment: of devices comprising nitrides or carbonitrides
H10N 69/00
Integrated devices, or assemblies of multiple devices, comprising at least one superconducting

Family

PCT/US2017/051366Parent of this continuation · filed 13 Sep 2017
US 2022/0384930 A1Pre-grant publication · published 1 Dec 2022
Application16/462,263Parent of this continuation
US 11,450,938 B2Parent of this continuation
US 2019/0341668 A1Published application
US 12,633,641 B2This patent

From the US filing history. Foreign family members aren’t listed.