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US 12,748,675 B2Granted
Quantum computation
AssigneeZ-Axis Pte. Ltd.
InventorJiachen Huang
Life of this patent
Estimating the term…
Abstract
A system including a quantum component and a classical component, the classical component including a compilation module and a quantum controller can be configured to perform obtain a task and perform a quantum computation. The task can specify a set of basis functions defined over an input domain and a selection of a set of quantum gates, the quantum gates being defined over an input domain. Performance of the quantum computation can include determining, by the compilation module, first sequences of quantum gates, applying, by the quantum controller, the first sequences of quantum gates to the quantum component, measuring, by the quantum controller, resulting state information of the quantum component for the first sequences of quantum gates, and providing the resulting state information.
Claims23
A method of benchmarking a set of quantum gates comprising:
- determining an approximate fidelity function for the set of quantum gates, the determination comprising:
- obtaining, by a classical component comprising a compilation module and a quantum controller:
- a selection of a set of basis functions, the basis functions being defined over an input domain, and a selection of the set of quantum gates, the quantum gates being defined over the input domain;
- generating at least one first probability distribution defined over the input domain using one of the set of basis functions;
- obtaining, by performing randomized benchmarking on a quantum component, a fidelity measure for the set of quantum gates under the at least one first probability distribution, the randomized benchmarking comprising:
- determining, by the compilation module, first sequences of quantum gates, each of the first sequences interleaving:
- a sequence selected from the set of quantum gates according to the at least one first probability distribution defined over the input domain and generated using the one of the set of basis functions, and a sequence selected from the set of quantum gates according to a second probability distribution;
- applying, by the quantum controller, the first sequences of quantum gates to the quantum component and measuring, by the quantum controller, resulting state information of the quantum component for the first sequences of quantum gates;
- and
- determining the fidelity measure using the resulting state information provided by the quantum controller;
- and
- wherein the approximate fidelity function is a function of the fidelity measure and the one of the set of basis functions;
- and
- providing the approximate fidelity function.
11 more elements
A system, comprising:
- at least one processor;
- and
- at least one non-transitory computer-readable medium containing instructions that, when executed by the at least one processor, cause the system to perform operations for benchmarking a set of quantum gates, the operations comprising:
- determining an approximate fidelity function for the set of quantum gates, the determination comprising:
- obtaining, by a classical component comprising a compilation module and a quantum controller:
- a selection of a set of basis functions defined over an input domain, and a selection of the set of quantum gates, the quantum gates being defined over the input domain;
- generating at least one first probability distribution defined over the input domain using one of the set of basis functions;
- obtaining, by performing randomized benchmarking on a quantum component, a fidelity measure for the set of quantum gates under the at least one first probability distribution, the randomized benchmarking comprising:
- determining, by the compilation module, first sequences of quantum gates, each of the first sequences interleaving:
- a sequence selected from the set of quantum gates according to the at least one first probability distribution defined over the input domain and generated using the one of the set of basis functions, and a sequence selected from the set of quantum gates according to a second probability distribution;
- applying, by the quantum controller, the first sequences of quantum gates to the quantum component and measuring, by the quantum controller, resulting state information of the quantum component for the first sequences of quantum gates;
- and
- determining the fidelity measure using the resulting state information provided by the quantum controller;
- and
- wherein the approximate fidelity function is a function of the fidelity measure and the one of the set of basis functions;
- and
- providing the approximate fidelity function.
14 more elements
A non-transitory, computer-readable medium containing instructions that, when executed by at least one processor of a system, cause the system to perform operations for benchmarking a set of quantum gates, the operations comprising:
- determining an approximate fidelity function for the set of quantum gates, the determination comprising:
- obtaining, by a classical component comprising a compilation module and a quantum controller:
- a selection of a set of basis functions defined over an input domain, and a selection of the set of quantum gates, the quantum gates being defined over the input domain;
- generating at least one first probability distribution defined over the input domain using one of the set of basis functions;
- obtaining, by performing randomized benchmarking on a quantum component, a fidelity measure for the set of quantum gates under the at least one first probability distribution, the randomized benchmarking comprising:
- determining, by the compilation module, first sequences of quantum gates, each of the first sequences interleaving:
- a sequence selected from the set of quantum gates according to the at least one first probability distribution defined over the input domain and generated using the one of the set of basis functions, and a sequence selected from the set of quantum gates according to a second probability distribution;
- applying, by the quantum controller, the first sequences of quantum gates to the quantum component and measuring, by the quantum controller, resulting state information of the quantum component for the first sequences of quantum gates;
- and
- determining the fidelity measure using the resulting state information provided by the quantum controller;
- and
- wherein the approximate fidelity function is a function of the fidelity measure and the one of the set of basis functions;
- and
- providing the approximate fidelity function.
11 more elements
Dependencies are inferred from the claim text.