US 11,443,222 B2Granted

Cross-resonance fan-out for efficiency and hardware reduction

AssigneeInternational Business Machines Corporation

InventorsJerry M. Chow, Antonio D. Corcoles-Gonzalez, Jay M. Gambetta

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Abstract

A signal generating system is provided. The signal generating system provides a microwave signal to a plurality of qubits. The signal generating system includes a generator, an oscillator, a mixer, and a splitter. The oscillator generates an oscillator signal including a constant frequency. The generator generates a generator signal including an initial frequency. The mixer is electrically coupled to the generator and the oscillator. The mixer combines the generator and oscillator signals to produce the microwave signal. The splitter is electrically coupled to the mixer. The splitter fans-out the microwave signal to a plurality of physical lines. Each of the plurality of physical lines is electrically connected to a corresponding one of the plurality of qubits.

Claims15

Dependent claims

A system comprising:

an oscillator circuit comprising an oscillator coupled to a first splitter, the oscillator being configured to generate an oscillator signal comprising a constant frequency, the first splitter comprising a plurality of terminals;
a plurality of mixers, the plurality of terminals of the first splitter respectively terminating at the plurality of mixers, each mixer of the plurality of mixers being electrically coupled to a generator;
and
a plurality of splitters, each splitter of the plurality of splitters being connected to a corresponding one of the plurality of mixers respectively, the plurality of splitters being configured to fan-out a microwave signal, respective outputs of each splitter being connected to a plurality of physical lines respectively, wherein each line of the plurality of physical lines for one splitter is not merged with the plurality of lines of another splitter of the plurality of splitters, the respective outputs of the plurality of splitters being connected to a respective qubit of a plurality of qubits.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 16/666,553Filed 29 Oct 2019 · continuation
Priority: 29 Sep 2017
Published: US 2020/0065696 A127 Feb 2020
Granted: 13 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H03K 3/38
Generators characterised by the type of circuit or by the means used for producing pulses: by the use, as active elements, of superconductive devices
G06F 1/06
Generating or distributing clock signals or signals derived directly therefrom: clock generators producing several clock signals
G06F 1/08
Generating or distributing clock signals or signals derived directly therefrom: clock generators with changeable or programmable clock frequency
G06F 1/10
Generating or distributing clock signals or signals derived directly therefrom: distribution of clock signals , e.g. skew

Family

Application15/720,927Parent of this continuation · filed 29 Sep 2017
US 2020/0065696 A1Pre-grant publication · published 27 Feb 2020
US 10,528,885 B2Parent of this continuation
US 2019/0102691 A1Published application
US 11,443,222 B2This patent

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

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